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. § _ _ - =' rnigcase Originated At. cmvsnmn F>x925T- " cv File up; *5;-2?'?$j|.- QQo.¢., .-
1-'i:m:n.u. BUREAU or INVESTIGATYON T 3' '
1161501-t'__l}l;_§_1g_ it " um P¢n¢a* new-t imaey
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B/7 9/135/50 JOHN B o'nonoc.mrr; A0
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*'92. _' 7 V _' _e llile L er- er -->_ e ow cha+a¢@er~-or--caser~*~* ~ ~~
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wmim PERL, aka William lutterperl PIONAGE - n
SYNOPSIS OF FACTS:
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PERL resigned from MCA effective
-r:.v'r.r> / 5100 P.1.:., 9/1/so. Left. Cleveland
D!.1I__G. 01". I.. r mrc, on 8/16/so. Accompanied MICHAEL.
"". '3' r 1 AI SIIIOROVICH in July 01 19b8 at. which »
_ _ __ - baker from ROBERT E. PFLMER, according
S * ~ ._ to PFLHEER and neighbor, who have furnish--
' " ed signed statements. _
U ..1513 for New York on 9/B/SO and apparently
2 moved into his parents home, 936 .
nrrm Street, Bronx, r:.x., on 1.118%.
date. Couimenced divorce action at Cleveland
against HENRIETTh BOYD SAVIIIBE PERL,- of 1
k.
time smonovxcn purchased 19b1 Stude '
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Pittsburgh 5-1386!, Q 92 ,St. Louis 5-1571! 1" - "
San Francisco _ ; .. ;~Seattle _ _ ' 3, ', {.1Washington Field . -J.-A-.Cleveland CV 6 -12726! . .Knoxville '5h88! - - DBSTWEYED _ -Dos Angeles ' COPIESNewarlg'e5l92i0O! 745?; _ 1 j 196%. I.New Haijenl E J I ?!E_f. J
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65-2730*",
DETAILS: BACKGROUND DATA -_7__¥__- ._- 4~_ _ _ - _-. __. ___._f __ _ l ___ _
On August 1B, 1950, WILLIAM 0. GIBBONS, Personnel Manager,
National Advisory Comittee for Aeronautics, advised the '
writer that WILLIAM PERL had tendered his resignation from NACA to be
effective 5:00 P.M., September 1, 1950.
A On September 1, 1950, Captain JAMES W. GIBBS, Chief of
Plant Protection, NACA, advised PERL's affiliation with NACA had been
terminated as of 5:00 P.M.; September 1, 1950. -
On September 6, 1950, the subject advised he was leaving
Cleveland for New York permanently on September 8, 1950. The New York
Division has advised PERL arrived in New York City on September 8, 1950, -
and apparently moved into his parent's home at 936 Tiffany Street, Bronx,
New York, on that_date. '
SA F. JOHN H. BEATTIE reviewed Docket #617230 in the -Court of Common Pleas, Cuyahoga County, Ohio, which reflects WILLIAM PERL, '
92 666 East 103rd.Street,_C1eve1and, Ohio, has petitioned for a divorce against_ mmmn eomfilvmoxgfau, 19h East saw Street, New York City, alleging §the defendant t be gu_1ty of gross neglect and failing and refusing to ,
make a home for him for a long period of time. The summons was issued on
August 16, 1950.
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65-2725
"" *' ' ' runcrmss oPl"x9111*srunEem:n-BY -"rm * ~- -- n -
_MICHAEL srnonovzcn, JULY 191:8
_ The records of the Autorggtle Bureau, West Third and
Lakeside, Cleveland, Ohio, reflect MICHE _ SIUOROVICH purchased a l9hl
Studebaker, Motor #166705, on July 21, 1958; from one ROBERT E. PFLLGER.
During the
on August 21, 1950, for the
SIDOROVICH typewriter, ANNEcourse oi an interview with m:r~21;¢'s1oonov1ca
purpose of securing typing specihens from the
SIDORDVICH advised Shs JOHN B. O'DONOGHUE
and DAVID A. WIBLE that she accompanied her husband when they bought their
present automobile and recalled a third person being with them. ANNE's
reply was directed to SA HIBLE but was also overheard by SA O'DONOGHUE,
who was securing typing specimens. The-automobile presently owned by
the SIDOROVICHES bears Motor #166705, according to title records of the
State of Ohio; _
ROBERT E. PFLEBER, an account executive of the Me1druq_
Fewsmith Advertising Egency of Cleveland, furnished the following signed_
_statement, which is being retained in the 1A file of 65-2730:
_' . "Patna, Ohio
Lugust 2h, 1950
- "I, Robert E. Pfleger, make the following voluntary
statement to John B. O'Donoghue, Jr. and Anthony 5. Fernandez, who have
identified themselves to me as sp5Eia1 kgents of the Federal Bureau of
Investigation. No threats or promises have been made to me to induce me
to make this statement. '
"I reside at 5202 Albertly Avenue, Parma, Ohio, where I
have resided for about four and one-half.years. '
"During the early part of July, l9h8 I took s classified _
ad inTthe Cleveland Plain Dealer for the purpose of offering for sale a '
l9hl.§tudebaker Champion which I owned. The ad apeared on a Sunday as
wcll.s on one or two other days. - '.
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65-2730 _ -
65-2728
On the Sunday when the ad appeared two men and one
woman came to my home for the purpose of examining the automobile. These
three persons drove up in an automobile driven by the younger and taller
of the two men. My car was examined by the taller of the men and then
was taken out for a ride with the taller man driving. The three persons
left without any deal being closed.
. 'he three persons returned the same afternoon within an
hour or two and the smaller of the two men whose heme after having my .
memory refreshed I recall as Michael Sidorovich stated he wished to _
purchase the automobile. The price agreed upon was $750! seven hundred
and fifty dollars. _Inasmuch as I needed the car for my use for about
two weeks we entered into an agreement whereby I would keep the_car until -
a new one I had ordered was delivered to me. Sidorovich gave me a deposit
at that time. _ " -
"Sometime later in July after my new ear was delivered T
I met Sidorovieh at the Automobile Registration Bureau in downtown Cleveland
and closed the deal for my l9Ul Studebaker.
"On Qugust 22, 1950 I accompanied Mr. Fernandez to the -
National Committee for Aeronautics Lewis Flight Propulsion Laboratory!
where I saw an individual who was identified to me by Mr. Fernandez as
William Perl. This person was the tall man who accompanied Michael
Sidorovich and the woman he introduced me to as his wife to my home in -
July, l9h8 to look at my 19hl Studebaker and was the person who drove-
mw car on a test run on them day.
* "I have read the foregoing statement, contained on this; .
and one other page. To the best of my knowledge and belief it is accurate
and true.
- f /s/ Robert E. Pfleger
--_. r-r:-
with ssed:
John B. O'Donoghue, Special Agent,VFBI, Cleveland, 0. B/an/So , -'
Lnth ny S. Fernandez, Special Agent, FBI, Cleveland, Ohio Aug. 2h, 1950'92_ __,,.-.,__. ' I E I
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PFLEEER'recalled-he"had*placedansad-in~both"the-"Cleveland ~ --
Press" and the "Cleveland Plain Dealer", metropolitan daily newspapers, '
offering his automobile for sale. He recalled PERL and SIDOROVICH since
he was of the impression at the time they visited hm that PERL was the
prospective purchaser of his automobile inasmuch as he examined the PFLEGER
automobile rather closely and drove the car on a trial run. when the -
SIDOROVICHES and PERL returned after first leaving he recalls SIDCROVICH ~
demanded a written contract and that ANNE SIDOHOVICH wrote out this contract.
' .No copy was furnished to PFLERLR. .
It was recalled by FFLEGER,when he visited the National
Advisory Committee for Aeronautics to vies PERI-in person, that PERL had
' intimated he was an aircraft mechanic or Scme such affiliated occupation. .
I On August 28, 1950, PFLEGER observed MICHAEL SIIDROVICH '
as he entered G706 Carnegie Avenue, Cleveland, and identified SIDOROVICH
as the purchaser of his l9h1 Studebaker. ,
- Mrs. ROBERT E. PFLEGER has advised she recalled three
persons arriving at her home during July, l9h8 to_examine her husband's
l9hl Studebaker. She recalled that she remained in the rear of her home .
throughout the negotiations but did observe two men and one women. She
recalled that one of the men and the woman entered her home with her
husband through the rear door at which time she understood they executed
a contract and made the final negotiations for the sale of the automobile.
On August 28, 1950, Mrs. PFLEGER observed MICHAEL,
SIDOROVICH and identified him as one of the two men and the woman who <
entered her home with her husband at the time of the sale of hcr husband's
automobile. S19 was unable to identify WILLILE PERL; -
- Mr. E. L. KESTNER, Mrs.,PFLEGER's father, advised he
was visiting the PFLEUERS on the day R. E. PFLEGER sold his automobile.
It is his recollection that the purchaser was accompanied by another mun _and§_woman, whom he did not feel he would be able to identify. KESTNER F
wasxuable to identify any photographs of SIDOROVICH and/or PERL. '>
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65-2720
' Hrs. E. !;.!CESTNI3R', IESTNI-3R"s w:Lfe','Tr:as '92Tn¬ble*t"o' "
identify any pf the persons and stated she did not recall the eventsurrounding the sale. ' '
Mrs. HRRIE APEL, Ellh Albertly Avenue, Parma, Ohio, a
next door neighbor of the PFLEGERS, advised she recollects Hr. PFLEGER
selling his automobile and recalls observing two men who drove up in an
old car on the day of the sale. She remembered the incident because she
asked her husband what was going on at the PFLEGER home and he advised her
PFLEGER had placed an ad in e newspaper in an effort to sell his automobile.
Mrs. A EL was unable to identify photographs but chose a photograph of1!.-'.vz1h{gEasz:1:cm-ss as resembling the shorter of the two men. She did not
see the woman but stated she only took a momentary glance at the_two men
and stated a woman may have been seated in the automobile that drove up.
' I. 1
EDWLRD J. APEL advised he did not recall the incident
and did not recall anything about the prospective buyers of the automobile.
' _Mrs. MLRIE BEIER, S206 Albertly Avenue, Farms, Ohio,
advised she distinctly recalls seeing two men and a woman inspect the
PFLEGER automobile on_g Sunday during July, 19b8, She recalls it was a -
Sunday since her husband was engaged in his hobby of umpiring local base¢
ball games. Hrs. BEIER furnished the following signed statement, which
is being retained in the la serial of 65-2730:
, " ."Cleveland, 01110
' September 6, 1950 _
"I, Marie Beier, make the following volunta:y_statement
to Anthony S. Fernandez and John B. 0'Donoghue, who have identified
themselves to me as Special Agents of the Federal Bureau of Investigation.
No threats or promises have been made to,induce me to make this statement.
"l reside at S206 Albertly Ave., Parma, Ohio, which is R,-
immediately adjacent to the residence of Robert L._Pfleger. I recall that;I ,
durin July of 19b8, Mr. Pflcger offered his Studebaker coupe for sale ' '-i throuih an ad in a local newspaper. On a Sunday during July of l9h8 at Q;whichitime the ad was running I recall Hrs. Pfleger's parents were visitid
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_ _ _ -» - - s~~-i--ifh-r"-**"**--f"the~Pflegers and Irwas seated a the driveway of my home wa c ing my
daughter who was bicycling-on ine front sidewalk. Sometime during the
afternoon of this Sunday I obs rved an old auto park in front of the
Pfleger home. I later saw tw' men with Mr. Pfleger, one short and
one tall. At a later moment 1 observed the short man enter the Pfleger
back door accompanied by Mr. Pfleger and a dark haired, thin woman.
"I may have walked to the front of the house durins the
time these people were present and I_recall that at the time I felt the 1
taller man was the prospective purchaser since the short man remained
more or less in the backgrrund.
"Immediately after these
returned to his backyard and announced he
- _ j _ I "On this date I observed
reception room of the Cleveland Office of
getion who is the tall man referred to in
told by SA John B. O'Donoghue this man is
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_ true. _ ~people left Mr. Pfleger -
had sold the car.
I
a man passing through the
the Federal Bureau of Investi-
this statement. I have been
William Perl. A .
"I haye read the foregoing statement and find it to be -
/s/ Mrs. Marie heier
John B. O'Donoghue, Special Agent, FBI 9/6/50 v
Anthony S. Fernandez, Special Agent, FBI,
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;: * "I, Marie C. Apel, do hereby make this voluntary state-_;F'9/6/so" _
-_ The follmwing signed statement was furnished by MARIE
C. APEL and is being retained in the exhibit envelope of 65-27285
"September_l9, 1950
Parma, Ohio
ment &0 James W. Anderton, who has identified himself to me as a Special é; -'- Agentgof the Federal Bureau of Investigation. No threats or promises
have_ een made me to give this statement. I reside at Sllh Albertly _
4 , _ .._ Ave, farms, Ohio. 1
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65-2728 '
_ -,i 4, . _F0hHa.Sunday.a£ternoon in-Jdly»l9h8-exact-date unknown r
I happened to see a car drive up in front of Robert R. Ffleger's home,
my next door neighbor; I asked my husband if the Pfleger's were having
a picnic and he told me that Mr. Pfleger was attempting to sell his
automobile and had advertised in the papers. A few minutes later I
noticed two men standing on my front lawn looking at Mr. Pflegers
Studebaker coupe. One of the men was tall and dark haired and the
other was shorter and more of light brown colored hair. A short while
later I noticed the taller man in the car apparently eianining the
dashboard. The shorter man was standing on the right side of the car,
with the door ajar, watching the taller man. .Mr. Pfleger was standing
at the left frodafender. -
"I didn't pay any further attention to the individuals
in Hr. Pfleger's yard. I know that the above two men came to see Mr.
Pfleger in an automobile. -
"I have read the above statement consisting of two
pages and to the best of my knowledge it is true.
/s/ Marie C. Apel
Witnessedé ' '
SA James W. Anderton 9-19-50 Panna, Ohio
. "I certify that the above statement was voluntarily
given me at Farma; Ohio on 9-19-50 by Marie C. Apel. .
I - Special Agent James W. Anderton "
The following signed statement was furnished by EDHARD
A. KESTNER and is being retained in thejexhibit envelope of 65-2728: -
,3- -= -H "Cleveland, Ohio I" _ Sept-cmbcr 19 , 1950
92 :.i I . "I, Edward A. Kestner, do hereby make this statement
freely and voluntarily to James W. Anderton, who has identified himself
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-"to me as~a~Special~A.ent-of theFederalBureau-of*Investi ation: No " *E 8 _
threats or promises were made to me and I understand that I do not have
to make a statement.
"I reside at DSUO South Hills Drive, and my daughter is
married to Mr. Robert §. Pfleger.
"On a Sunday afternoon, either in the later part of July
or first of August 19U8,m wife and I about 2=30 P.M. drove in my son-in-
law's driveway and upon driving to the rear of the house noticed my son-
in-law, Robert R. Pfleger talking with two men and a woman. These men
were purchasingimy son-in-law's Studebaker Club Coupe. One of these men
was quite a bit taller, about 3 inches taller, than the other one. I can
not remember exactly the description of the woman. As I got out of my
car the shorter.man asked me if my car was for sale and I answered No,
you can't buy this car. My wife had by this time entered the yard and
I then entered the yard. About ten minutes later my son-in-law came in
and announced that the man had bought his automobile and had given him
a down payment.
_ yon September 19, 1950 Special Agent Lnderton exhibited
several photographs tqme and from the photographs shown, the ones of '
Eichael Sidorovich and William Perl closely resembled the individuals
in question.
_ I have read the above statement consisting of two pages
and find it to be correet to the best of my knowledge.
' /s/ Edward A; Kestner
witnessed: .
Special Agent James-VI. Andorton : -
"I certify that the abdve statement was rendered voluntaril,
to me-by Hr. E. A. Kestner on September 19, 1950. F"
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6S-2730
65-2728
FLBGER and MARIE sum, when first interviewed,
graph of MICHAEL SIDOROVICH from a group of
of the PFLEGER auto. PFLEGER stated that
a resemblance to the man accompanying
was unable to definitely identify it, stating
hinner. Mrs. BEIBR selected PERL's photograph
and stated she felt the person represented
As is reflected in their signed statements,
set forth previously in this report, both identified PEEL when they saw
him in person. __7" ROBERT E. P
immediately selected a photo
photographs as the purchaser
the photograph of PERL bore
SIDOROVICH at that time but
SIDOROVICH's companion was t
from a group of photographs
was SIDOHOVICH's companion.
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__,_._i_ _ * . . _ A »---t -- - ~ * ~~' '~f Tr'*"' _**-"*""' ' *'__' '7PURCHASE or 19h; STUDEBAKER BY
WILLIAM PERL, sarmtnasn 19h8
Ihe records of the Auto Title Bureau, West Third and
Lakeside, Cleveland, Ohio, reflect WILLILM PERL purchased a l9hl Stude-
baker four door sedan, Motor #199802, from EDWARD K. RHODES, Trumbull
Court, Newton Falls, Ohio, on September_l3, l9hB.
st F. JOHN M. BELTTIE interviewed EDWARD K. RHODES, who
now resides at 1399 East llOth Street; Cleveland, Ohio, on'Lugust 2h,
1950.
RHODES advised PERL was accompanied by another individual
at the time he inspected RHODES automobile, who was not introduced to . '
RHODES. He recalled this since he introduced PERL to his wife, EVELYN,
but since he did not have the name of the other individual he was unable
to introduce him to his wife. RHODES identified a photograph of WILLlLM
PERL as the individual who purchased his automobile but was unable to
identify a photograph of MICHAEL SIDOROVICH as the person who accompanied °
PERL. ' M ,
RHODES recalled PERL stated he was employed by the .
Pearl Linoleum Company of Cleveland and that when RHODES volunteered to
leave a car jack at this company for PERL at a later date, PERL immediately
advised he would personally pick it up. Re recalled_that PERL bought his
automobile the same evening he came to inspect it and paid a purchase
price of $970.00 in cash. After PERL had left with the automobile and
within an hour PERL called RHODES and told him that the automobile had _
broken down._ RHODES.went to the place of the breakdown and, to the best_
of his recollection, believes this was between Euclid and Carnegie Avenues
on East 105th Street. PERL's companion was no longer in the car when '
RHODES arrived. It is noted that MICHAEL SIDOROVICH resides at 8706-
Carnegie Avenue, which is approximately a five to ten minute walk from - _;-xi
East;1OSth Street. RHODES also recalled PERL stating he considered the :1 -
Studebaker to be a good car since he had previously owned one. . . ". . -_
. -' _ 10 -
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65-2730 '
65-2726
On August 25, 1950, RHODES observed HICHREL SIEDROVICH
in person but could not effect an identification although he stated he
was certain he had seen SIDORDVICH some place before but could not state
he was the individual accompanying PERL at the time PERL purchased_his
automobile although this could be possible. RHODES wife, EVELYN, also
viewed SIDOROVICH but was unable to identify him.
. Mrs. LOTTIE E. WYLER, the owner of the home at 1257
-Brockley hvenue, Lakewood, Ohio, where PERL roomed from August to approxi-
mately Christmas, l9b8, was interviewed by SL DLVID A. WIBLE on August 26,_
1950. Mrs. WYLER advised that PERL may have come to her home tc_live as
early as a week after July h, l9h8, and she recalled that for a considerable
length of time after his arrival he drove an old coupe, the make of which
Ashe did not know but which possibly could have been a Plymouth. This auto -
had a faded appearance and might have been a faded blue although she was
not certain of this fact. She definitely recalled that PERL took this._
car back to New York possibly around Labor Day of l9b8 and upon his return
purchased a pre-war four door Studebaker. She recalled he saw an ad in
a local newspaper which she believes is the auto he ultimately purchased.
On September 12, 1950, RHODES was introduced to MILTON
KLEIN, fellow employee of PERL at NACA, and RHODES, after conversing with
.!$LEIN, stated he was convinced KLEIN was the person who accompanied PERL -
at the time PERL bought RHODES auto. He advised KLEIN recalled incidents
which he, RHODES, had forgotten but now remembered.
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65-2728 ' -
" "' " * ' MILTON KLEIN was interviewed"onSeptember l2,"l959y' ~
by SAs JOHN B. O'DONOGHUE and DAVID LL WIBLE. KLEIN advised that he
had been employed by NACA since l9b2 and has known WILLIAM PERL since
they attended DeWitt Clinton High School, New York City, together in the
early thirties. KLEIN denied any knowledge_oI espionage activity on the _ I,
part of PERL or himself and stated he had never been affiliated with ' 7the Ccmmunistygirty or any similar organization. KLEIN identified photo_graphs cg/MAX, ITCHER, MORTONfS6BELL, STANLEY §ICH, WILLIAQJBANZIGER,and JOEQ ERRR, all of whom were classmates of both he and_WILLIAM PERLat the College of the City of New York. KLEIN stated that all studied
electrical engineering and since he majored in chemical engineering he
was not as well acquainted with them as WILLIAM PERL. He further advised
that his association with these people was very slight and he did not _
believe PERL to be particularly close to any of them. However, he believed
DANZIGER_was best known to he and PERL since DANZIGER resided in the same ,neighborhopd in the Bronx. "
' KLEIN furnished the following signed statements concerning . '_the purchase of a l9hl Studebaker by WILLIAM PERL from EDNARD K. RHODES {£2during September of 19b8, which statements arc being retained in the exhibit %b
Jenvelop of 65-2730:
' "September 12, 1950
Cleveland, OhioI,1 _a
"I, Milton Klein, do make the following voluntary state-
ment to John B. O'Donoghue and David A. Wible,_who have identified them-
selves to me as Special Agents of the Federal Bureau of Investigation.
I have been advised I need make no statement, that I have the right to_
the advice of counsel and that any statement I make may be used against
1118- - ' '
"1 recall that during its early fall of 19b8, William
Perl, an associate at the National Advisory Committee for Aeronautics _
and mho Iehad known since m youth, mentioned he was in the market for a 5* *
usedfautomobile. On one occasion I accompanied him when he went to inspect --_
a Studebaker Nineteen forty-one model! at an east side Cleveland address.AIte§ inspecting this automobile I recall Perl purchased it and we drove ¥?
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"off in the Studebaker together. Approximately ten or fifteen minutes
after, the Studebaker broke down. Perl attempted to fix the Studebaker
but was unable to do so. He then called the person from whom he pur-
chased the Studebaker and shortly after that individual came to the
place where the auto had broken down and offered assistance.
"Last night I accompanied Special Agents F. John E.
Beattie and David A. Wible to e home on East 110th St., Cleveland and
observed a man who is the person who sold Perl the Studebaker. He ,
. was introduced to me es Edward Rhodes and I then recalled this to be
the name of the seller of the aforementioned Studebaker.
I have read the foregoing statement, consisting of ,
this and one other page, and to the best of my recollection, is true
and accurate. .
/s/ Milton }khlein
John B. 0'Donoghue, Special Agent, FBI, Cleveland, 0., 9/12/50
David A. Wiblc, Special Agent,FBI, Cleveland, o,A9/12/so"
Gk-N-H-*-l!~*# '
"September 12, l9§O
_ Cleveland, Ohio
"1, Milton Klein, do make the following voluntary
statement to John B. O'Donoghue and David A. Wible, who have identified
themselves to me as Special Agents of the Federal Bureau of Investigation.
I have been advised I need make no statement, that I have the right to
the advise of counsel and that any statement-I make may be used against
H10. .X
"I do not know Uichael Sidorovich nor am I able to_ ,,<-'
recognize a-photo of him, as furnished to me by Special Lgent 0'Donoghue- -
I do not recoanize the name Robert E. Pfleger and I have never entered - -
intolany dealings, social or business with either.Sidorovich or Pfleger.
I neiar, to my recollection, looked at or sought to buy, either myself
_ .
92 _,, _ _ -
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'65-27§o~='=f ""
65-2723 - '
"or in the company of anyone else, an automobile in Parma, Ohio.
I "I have read the foregoing statement, and to the best
of my recollection, it is true and accurate.
' /s/ Milton M. Klein
John B. O'Donoghuc, Special Agent, FBI
David A. Wible, Special Agent, F.B.I. "
Mrs. nrcnnno J. JENKINS, 666 East lO3rd Street, Cleveland, ~
advised SA VINCENT R. NLPOLI thatzde aunnsthe pr-mises at this addressand rented an upstairs apartment to one SIDNEY MliLRMON, an employee of' '
NAGA, who in turn sublet the apartment to WILLIAM PERL. During this
period, the Summer of 1950, HAHMONwes studying at the University of
Michigan, Ann Arbor, Michigan. Mrs. JENKINS knew of no unusual activities
on the part of PERL; but identified a photograph of MICHLEL SIDOROVICH as
a man who came to her home and asked for PERL sometime during the middle
of July. She recallcdlthat this person wore a straw hat, glasses, and ,
a light brown suit. After directing him to PERL's apartment she did not
see him again. A
On August 16, 1950, sa WIBLE accompanied Hrs. JENKINS
to the neighborhood of 8706 Carnegie Avenue, where Mrs. JENKINS viewed
MICHAEL SIDOROVICH from a vantage point as he returned home from work
at approximately 6:30 P.M. Mrs. JENKINS stated that she was able to
get a very good look at SIDOROVICH and she felthe looked enough like
the individual who had inquired for PERL to be that person's twin brother.
However, she stated she would not be able to'testify under oath that
SIDOROVICH was identical with the unknown called since she was not certain.
. I .
_ Physical surveillance to date has failed to reflect f;¢n
SIDQOVICH'has ever worn clothes such as described above and has never - I
been been to wear a suit coat. -
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65- 0 ----_._._.
ROBERT RESNICK
_ During the course of previous interviews PERL has
advised he was acquainted with ROBERT RESNICK during the period of
RESNICK's employment at NACA.
WILLIAM G. GIBBONS, Director of Personnel, Lewis Flight
Prop 1 sq f:hQ n+nry, NACA ¢*= advised PEEL was closely assoc:-co Iwith and was immediate superior until 7¢,resigned in June, l9h6. E9
_Pez-sonnel records of NACA ref1ect@was employed
by that organization from April S, 19hh, through June 2 , l9h6, at which
time he resigned.
Confidential Infonnant §-1, of known reliability, ad-
vised on September 25, 19th, that_ROBER 1 NICK was a member of the '
Ward 19 Club of the Communist Political Association, Cleveland, Ohio.
T-1 and T-2, of known reliability, have advised that throughout the
remainder of_i9hl.| and through I-4.-irch, 1916, RESNICK was kno~.'.'n to them
to attend CPA meetings.
bl Confidential Informant T-3, of known reliability,
advi ed P C was investigated under the Hatch Act and "cleared" by
. A ' i ' _ Lewis Flinht Propdlsion -
L a _, ~. A, in march, 7*u.
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more active the-_ sectiews a££a;;:? "J.Ch1_i§JF}ormazg:S;1;,_1,i3i_:;§_,;I, v
o §92z'i.I1&a;."'_IIf, l9m§ Ea? "r'B?jd'¬s B._.g~T.E.h1B;toT§<a{ : n1eIm»111ne 1m. §i?f¬é1-Se w6xili!"b-e*§iH~?$="wi1.h '§§§§n'§-for two wee§'?§T§:==*%3~
&gE§iT?2?i9h?[the'inf8sént 33FisedtBai~$ersops:eg§§§i§fi§?to &oggt,, - _a"=;f t;*-*»??.¢:i:*" e-_m@c@tweam see val; gcéahgipea 155$:-1_;c:~; -:11. _;5g1=e§t,:- 335,3, gt} tag Em ,_ and gs ggauleil gturniat-¬"t1»1@_§fji£a=w~e""°Sa%i1i;¬§2e&£?;£°e% Q~i° a=~_ - s c so
T-5 also stated that on September 2h, 19b7, MAURICE
* RAVERMA§_and BOB RESNICK were attempting to get new members to attendthe CR_meeting on September 25, l9h7; ~
'- It is noted that at the time RESNICK resigned from
NACA he accepted a position as instructor at Johns Hopkins University
at Baltimore, Maryland. In August, 19b9, RESNICK accepted a position
as Associate Professor in the Physics Department at the University of
Pittsburgh. There has been no indication of Communist activity on the
part of RESNICK since his arrival in Pittsburgh.
HERIU-.N 'r->'.-1-zpswsm '
WILLIhM PERL has advised he was closely associated
with EPSTEIN during the period both were employed at NACA, Cleveland,
Ohio, from January, l9hh, until the Fall of l9h6. -
On September ll, 1950, HERMAN T. EPSTEIN, Associate
Professor of Physics, University of Pittsburgh, was interviewed concerning
his connections with PERL. EPSTEIN advised that he first met PERL in
January, l9hh, when he, EPSTEIN, accepted a position at NACA; Cleveland,
Ohio. EPSTEIN stated that he was employed in the Theoretical Section,
Wind Tunnel Division, and that PERL was his immediate supervisor._ EPSTEIN
informed that he worked with PERL for approximately three years until the
fall of 19b6, when he, EPSTEIN, resigned his position and went to the
University of Michigan to study for his doctor's degree. EPSTEIN advised
thatihe and PERL have kept in correspondence and personal contact sincethat {time and that he, EPSTEIN, considers himself to be one of PERL's_
closet friends.g-i '
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PERL had very few outside contacts, kept very much to himself and was
very conscientious in his work. EPSTEIN recalled being in personal
contact with PERL in June, 1950, when EPSTEIN attended a five-day con- '-
ference on biophysics at Oberlin University. He also recalled seeing
subject in Cleveland during May, 1950. EPSTEIN stated that he had also <
been in contact with PERL on other occasions which he could not speci-
fically recall at this time. By way of explanation, EPSTEIN92stated
that during the past 1% years he, PERL, and one, Dr._WlLLIAM;UGRDAN, _
presently at the University of Washington, Seattle, Washington, have
been working together on a problem in biophysics, and that consequently,
whenever possible, they have managed to get together to discuss the
problem. ' -
It is noted that EPSTEIN stated that he only met
JORDAN on one occasion in Cleveland; that JO$DnN was an'ecquaintance .
of the subject, and that he believed JORDLN is a medical doctor.
At the beginning of the interview EPSTEIN stated that
in June, 1950, the subject told him that he was considering accepting
a position at Columbia University in New York City, and that he also
had under consideration several other jobs including a Government
position of some type;' EPSTEIN further stated that the subject had also
indicated a contemplated trip to Seattle in order to work with JORDAN..
EPSTEIN stated that he has not as yet heard from PERL concerning his,
PERL's, present activities but that he expects a letter from him in the
very near future. EPSTEIN expressed the opinion during the interview
that the present inquiry of the FBI had to do with a position which
PERL is seeking and nothing was done to change EPSTEIN's opinion. _
| _ -
,£§L__ptembe£ 12 KO _§Pb$eguent to the int_,yi§g p§+_EP_S'IfEIN, _one 31§§£'1'f'§, -"#:,92_"1~,"_ '_,,;,~11 """;+%,"1'iiventen:g *§'-PE;-m .- _ _ 1?; <>.r§§ntema1_
tRcvéhue,"6UllShgggionyotgl, Pittsburgn?pe?§3H§lly app¢E}éd at_the' ' Pi¬£§bu?i;;1§ofr;9_qbg1ie advised SA sow-".110 fl. WACHIIOLZ that he,
r$§i§g§ pn the§thi§d floor of a residence at 210 South St. Clair Street. ,r~'iB_I§!_%g1f5:advised nfét HERMAN 'r. EPSTEIN, .1 biophysicist at the Un;';"v,e_rs_;J,y fiof '19" tsburgh, resides on the second £1001» of this residence '§i1§ _ggg,§:j1"'§_,s§£;§ ,g -.stated that he and his wife have noticed that EPSTEIN has been_receiving_¥i
Commrixist literature, including the "Daily Worker". RICKETTS further ,_~.1 B - . u.._-»=--' -92 - ¢ A _ _ ; f___-~ - . 0 _¢l==n,- - __ ._ . _ _ . 2 _ '
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_ _ ,and_out_of__the_EPS'11BINapartrnent~7 a.r;dith'at"sh*e'r'e'caJf1§ a't_6n e time '|. _ J,-v-n_.
as-2 ao_.,.... ""' ' *
Qt:-&!f 1*infonned that in the past has observed people comiQgin__ __ H
that EPSTEIN, in company with visitors, was operatiné; either a recordingmachine or some sort of a shortwave radio set. @_ICK_ETTS also informedthat the occupants of ~a next-door apartment, DON/:L5 TaE'T3LE¢ I~JOI¬tW.IETTf¢,had until recently been fairly close friends 51 the EPSTEIHSI g.ICY.E'ITS_stated that at the present time they did not seem to be particu er 3'fr-iendl and that durin the ve n " " ° " y '~ _g ' [-; _ e ni g of .. Tii2'fn5er 1,50, E.-..92IETTI-. madetheatatement to that EPSTEIN 1 . g 9 -winger m thePittsburgh district} _. .. 1 _, AI
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, l14 .yf WILLIAF PERL has advised that when he was contacted by
VIVIAK,QLASSMAN on July 23, 1950, she wrote out her message to him on a
pad of ruled paper. On July 26, 1950, PERL furnished the remains of that
pad consisting of four sheets of ruled paper and one sheet of ruled paper
containing handprinting and handwriting in pencil consisting of a note to
his maid,_MhTTIE BROOKS. The Laboratory by report dated August l, 1950,
advised that no indented messages could be found on these specimens. .
' The FBI Laboratory by report dated August 1?, 1950, ad-
vised that the follqying money order applications, all bearing the name
of the signer as W. PERL, were executed by WILLIAM PERL: -
#162213 dated January 20, 19h? -
#5711714 dated July 25, 19h?
#195061 dated September 23, 19h?
4 #199603 dated October 28, 19h? -
#2ne1h dated January 22, 19146
. #9l3§7h dated November Eh, 1938
By report dated August 31, I950, the FBI Laboratory
advised that money orders #50990 dated August 30, 19b8, #52296 dated
September 23, 19b8, and #5h22? dated October 22, l9h8, were executed by
WILLIAM PERL. All of the above money orders were made payable to A.
SARLNT, Ithaca, New York.
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The Laboratory by report dated September S, 1950, ad- ,
9 1950 directed vised that the typewriting on the letter dated August , ,
V t Mexico D.F. was compared with various typing specnens to Mr. N.§}ALTER a ,
secured frdm PERL's apartment during an authormzed search.
By report dated September 6, 1950, the Laboratory
advised that a photograph of three sets of typewr1tten statement by
1950 was compared with the letter directed I WILLIAM PERL dated July 28, , .
to Mr. N. WALTER, Mexico D.F., referred to above, without effecting an
identification. _
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Confidential Informant '1-1, cf knswn reliahilit ~, advised 'that subject has been in contact with the following persons and/irorganizations: A '
Walter J. Johnson, Inc.
125 East 23rd Street
New York 10, New York ,
U. S. Department of Agriculture
Washington 25, D. C. -
Melard Manufacturing Company
37-25 32nd Street .
Long Island City 1, New York
Planters Nut and Chocolate Company
632 South Main Street
Wilkes~Barre, Pennsylvania -
-1 92 4' '
H. R;1March _
University of Washington
Seattle S, Washington
_- Sidney M.{Hai'nonBox 226, reene House
rum Arbor, Michigan "
Institute of Electrical Engineers
Savoy Place, Victors Embankment
London W.C. 2
__ Sadie'7"!.iuttcrperl#*" 936 Tilfrny Street
; -92_ ' Bronx, New York
.g . _ ;
Y " It is noted sum; b.'IUTTEP_PER.L addressed her letters to t'__
subj ct aslate as August'?, 1950, to 16802 Larchwood Avenue, Cleveland, f
although he had been residing at 666 East l03rd Street, Cleveland, since
the lettet part of June. _ '
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PERSONNEL RECORDS 3 uncg
_ The following material was copied from documentsé contained in PERL's personnel file at NACA.J
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"Memo. for Administrative Officer'.
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- "Subject: Transfer to Physical Research Division.
"For approximately six months I have been assigned to the
Maintenance Section. While I have no complaint to make con-
cerning my treatment in the Maintenance Section, I do not feel
that I am of as much value to the Committee in this section as
1 could be elsewhere for the following reasons:
"a! The duties I am assigned to at present, being
necessarily of a practical nature, do not interest me as much
as I believe research work would.
"b! M interests are in the direction of mathematics
and physics.
"In view of the foregoing I beg you consider transferring
me to the Physical Research Division. .
"Respectfully Submitted,
. /s/ "WILLIAM MUTTERPERL"
"App wnc
10/16/39"
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"Sir:
Building
Electric
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Through
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CERTIFICATE u¢..P-11h71, SR:HH, 3-19-L1"0 <9
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"'-4...-|=-¢= I"MAR 29 l9b1"
Pursuant to action of the Committee on Personnel, A
s, and Equipment, you are hereby rerated from qunior
al Engineer, Grade P-1, with pay at the rate of $2200-
, per annum, and appointed Assistant Electrical Engineer, Grade
P-2, with pay at the rate of $2600 per annum, effective April
"Respectfully,
"NATIONAL ADVISORY COMMITTEE '
roa AERONAUTICS,
"J. F.Vietory Q ,
Secretary-
rur. William Mutterperl, .
' Langley Memorial Aeronautical Laboratory,
Langley Field, Hampton, Virginia.
_J
official channels.!
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?r::==f "Langley Field, Va-
p April 8, l9D3
__ _ _ _ "LL51-1QRANDU§Eo; 9Yge_f_Ae_r9§m§rr1i_c_§ Divi§i_on- __ _ _ _ _ _, , _ l
"Subject: Recommendation for the promotion of
Mr. WILLIAM MUTTERPEHL.
"1. It is recommended that Mr. WILLIAM MUTTERPERL
be promoted from his present pay status of Associate Electri-
cal Engineer P-3! at $3200 per annum to Aeronautical Engineer
P-h! at $3800 per annum.
"2. Mr. MUTTERPERL has demonstrated exceptional ability
in theoretical research and in his ability to grasp, understand,
and develop difficult and abstruse problems. His recent work
on the theory and design of axial-flow fans-represents an out-
.standing bit of research and is a substantial contribution in
this field. His theoretical studies of sweepback, airfoils in
cascade, and development of new methods for the calculation of
pressure distribution on airfoils are examples of the type of
analytical studies which he is capable of handling. Mr. MUTTER-
.PERL has a brilliant mind and has shown a continuous improvement
during the several years he has been at the full-scale tunnel-
I firmly believe that he will make even more substantial con-
tributions in the'field of aerodynamics and feel that he should
be encouraged in every way possible."
- ' "'/s/ ABE SILVERSTEIN '
Abe Silverstein, '
Principal Aeronautical Ehgineeri
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_@ll-'1 22=l MUTTERPERL, WILLIAM!
"Memorandum to Mr. H. J. E. REID.
"Subject: Absence from the Laboratory on May 31 and June 1; 19h3" _
"I was away from the field on May 31, and June 1. Be-
cause the necessity for my departure became apparent very shortlybefore I left, and because I did not realize that Monday was a
holiday, formal permission to leave was not requested. It isbelieved that no-great delay in my work occurred because of my
/s/ "WILLIAM MUTTERPERL" ,
"OIKO H.O..J. "" June S,
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<::;,,' "Langley Field, Va.,. November 18, 19U3.
"Mr. Abe Silverstein,
National Advisory Committee f5r7AeroEutics,*#_
Cleveland, Ohio.
"Dear Abe: -
"In regard to MUTTERPERL'S transfer, I talked the matter
over with MUTTERPERL and DEARBORN and it looks as though it will
be possible to transfer him to Cleveland about December l as we
previously agreed. MUTTERPERL is getting his affairs arranged
with this in view.
Ms regards MUTTERPERL'S papers, the situation has not
changed appreciably as yet. As we agreed, I have JONES and
von DOENHOFF looking these papers over with a view to com-
menting particularly on their usefulness and I have hopes that
we will be able, with perhaps certain revisions in the presenta-
tion, to get them published. I don't thihk that we can_clean
them up before the first_of December, and after talking to
MUTTERPERL and DEARBORN I believe that with KATZOFF'5 assistance
we can handle the situation at least until actual revision is
required, at which time of course we could send KATZOFF'S "
suggestions to MUITERPERL for final changes. With the date so
uncertain as regards the final disposition of these papers, I
think it best that MUTTERPERL go to Cleveland about December 1.
"I will take steps here to clear MUTTERPERL for this trans-
fer but I suggest that you, as a matter of record at least, start
through a request from Cleveland for his transfer there.
, "We are having a lot of grief with.the fan on the PBM-3 -
and I may want to get you down for a couple of days to help
us thrash the solution out. So keep your work_organized so you
can get away for a couple of days on short notice."
;,,.u_, - "Yours very truly,
- *»_ /s/ "J. w. cnowttr _
JOhI'l W0 CIO'W1¬y, JTQ" - -
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' November 20, l9b3
e_i_ __"*~"~e§E}5$,1°_"5: - was __ /ea- _.__. _Qe _.__._
":.asraommnuu= Mr. YELEPER,
Executive Engineer. C.K.
"It is requested that necessary paper work be initiated
for an official transfer of Mr. WILLIAM MUTTERPERL from the
L.M.A.L. to the A-E.R.L. on or about December 1, 19h}. This
date has been checked with Mr. CROWLEY of L.M.A.L-, and is
satisfactory as indicated on the attached letter."|.
}°i
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"Abe Siiverstein,
Chief of Engine Installations Division."
"RC5 11/23
"Gov't expense"
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- ' I November 25, 1953."
- "hwmA% p __ "_ M p _;d___ W_H__ _"-""'""'"*"'To'""LMPlL*_" - to e'e
"Subject: Transfer of Mr. MUTTERPERL to AERL¢
"1. It is understood that tentative unofficial preparations
have been made between Mr. CROWLEY of LMAL and Mr. ABE SILVERSTEIN
of AERL for the transfer of Mr. MUTTERPERL from LMAL to AERL,
effective on or about December l, l9b3- It is assumed that it is
entirely agreeable to your laboratory to have this transfer '
consummated. Inasmuch as the transfer will be in the interest
of the Government, it is our intention to recommend that the
transfer be made at Government expense and we will therefore
need the following information regarding Mr. MUTTERPERL- o
- " a! Grade and salary I » ,
b! Mode of transportation desired
c! Whether or not household goods or personal
effects are to be shipped
Whether or not Mr. MUTTERPERL has dependents
living with him. _ - d!
. *2. Your-prompt attention in reply to this letter will
be appreciated as the proposed transfer date of December l is
fast approaching." _
/s/ "sown-an R. sums
* Edward R. Sharp,
Manager.
_-r"ECBzmhh _
I
"Copy to Washington Office .__:_.Z-'-% , K
L 92_, a "RETURN TO mam.
5' PERSONNEL FILES"
"Nov. 25 l9U3" 9aa" -
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%¢s:--
rwc-150 December L, 19b3
"Sir:
"Pursuant to authorization of the Chairman, you are here-
by transferred from Aeronautical Engineer P-h, with pay at the
rate of $3800 per annum, Langley Memorial Aeronautical Laboratory,
Langley Field, Hampton, Virginia, and appointed Aeronautical
Engineer, at the same grade and pay, Aircraft Engine Research
Laboratory, Grayton and Brookpark Roads, Cleveland, Ohio, effectire g
from the date of your entrance on duty.
"This transfer is required in the interest of the Govern-
ment and is not for your convenience. -
"You are hereby authorized to proceed to Cleveland, Ohio,
at the earliest possible date, via privately-owned automobile, and .
"for necessary direct automobile travel you will be allowed h
cents per mile. It has been determined that travel by automobile
is more economical and advantageous to the Government. '
"While traveling under this authority you will be allowed
_traveling expenses in accordance with the Standardized Government ,
Travel Regulations, including $6.00 per diem in lieu of sub- .
sistence. The_excess time required for travel by automobile over
that required for travel by train will be charged to your leave
account and subsistence will not be allowed for such time.
-"You are authorized to have your household and personal
effects shipped at Government expense in accordance with the
provisions of the attached Executive Order No. 8588 of November
7, 19b0, as amended, applicable to persons having no dependents
living with them. Shipment shall begin within the six-month
period following the effective date of this transfer, unless an
extension is requested and approved within that period. The _provisions of the Executive Order will be strictly observed." Jar -
f. ' l "Respectfully, -'- -
5 "Mr. WILLIAM MUTTERPERL - -
' eronautical Engineer P-h NATIONAL ADVISORY COMMITTEE ,:
ngley Memorial Aeronautical FOR AERONAUTICS f '
'boratory , _
Langley Field, Virginia E. H. CHAMBERLIN
Through official channels.! Acting Secretary"
Enclosure _ 30 _ _ _ A
MK.
-_ . ._.._._ __ L7 P . ~ _7-- Y ' ' VV 7 _' _"_' '|- -
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92/-mas m. mzwromc mz mm 11 65733
ABE SILVERSTEIN, NACA AIRCRAFT ENGINE RESEARCH LABORATORY22§$*% iiJB6: 31
=....AI-
STAYING OUT ABOUT A WEEK EMERGENCY WIRE CARE
WESTERN UNION GRAND CENTRAL IF NEEDED
W MUTTERPERL
859.4 June 12; .
RQl7-ZSJRTU -
COPY FOR
Leave Office
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My leave
granted.
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AS .
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"Cleveland, Ohio,
November 9, l9bh.
"MEMORANDUM For Manager-
"Subjecti Overdrawn leave.
I have taken a total of 28 days leave this year-
is thefefore B days in excess of the maximum time
The overdrawal of leave was made necessary by my _ ' Q
and the ensuing difficulty of locating a suitable place
It is requested that the excess leave be granted
as annual leavei" - *
_ ' /s/ "WILLIAM MUTTERPERL
William Mutterperi,
Aeronautical Engineer."
c. BRAIG 5
/' the Manager" .
. "RETURN T0 AERL
PERSONNEL FILES"
_ 32 -
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CV. F """
65J23O
JBQri
i NACA-Cleveland-| -
_--PI&l.
J
"PERL, WILLIAM ?"
' "Cleveland, Ohio,
' February 23, 19115.
MEMORANDUM For the Manager. I
I
"Subject: Recommendation for promotion of Mr. WILLIAM PERL,
- Analytical Section, Engine Installation Research
', Div ision.
hla It is recommended that Mr.
from Aeronautical Engineer, grade P-h,
annum, to Aeronautical Engineer, grade
$h6OO per annum.WILLIAM PERL be promoted
at the rate of $3800 per
P-St at the rate of
"2. Mr. PERL entered duty with the Comittee on April
.8, 1939, as a Junior Electrical Engineer, grade P-1, at the Lang
ley Field Laboratory. While at Langley Field he was attached
; to the Analytical group of the Fu1l~Scale Wind Tunnel, under my
§ supervision. On December 23, 19b3, he was transferred to the
" Cleveland laboratory to take charge of the Analytical Section» .i of the Engine Installation Research Division.
? "3._ Mr. PERL'S work has been outstanding during the
F entire period of his employment. His knowledge and skill in
the field of theoretical and applied aerodynamics rank him
as one of'the leading men in the field, and he has written
papers which may prove to be classics in the field of potential
flow. His publications include the following:
a! Calculation of Span Load Distributions on
Swept Back Wings,| December, 19u1 - T.N. 83h, by
WILLIAM MUTTERPERL since abbreviated to
WILLIAM PERL!. 3 '
.-J/~"~-e= .
f " b! The Conformal Transformation of an Airfoil ,
_} '92= into a Single Straight Line, and its Applica-
* " tion to the Inverse Problem of Airfoil Theory,
~ .December, 19hh - ARR No. LhK22a, by WILLIAM
ll_.ae»-- MUTTERPERL. ' .
-// I -33-1/
l
l
Ii__B d!__JA_Solution-ofL1he-Directandlnuerse-PotentialProb-
"-
- it is believed that Mr. PERL is entitled to promotion to the
'5 position of Aeronautical Engineer, grade P-5. -Lg .i Q
cv. F. Q, 65:9 ""
J n _
" c! ihigh Altitude Cooling - Part VI - Axial-Flow Fans
7* "and Cooling Power, September, l9hh ARR No. Lhllle,
by WILLIAM MUTTERPERL. _
for Arbitrary Cascades of Airfoils,* December, lems
- ARR Ihxzzb, by WILLIAM MUTTERPERL- _ 19bh
The End-Plate Effect of a Horizontal Tail Surface
on a Vertical-Tail Surface,' February, l9hl - T.N@
797, by WILLIAM MUTTERPERL and MT; KATZQFF1 1 .
IA Two-Dimensional Incompressible Potential Flow of
Corrugated and Distorted Infinite Surfaces, January,
19h5-~ ARR ESAOS, by WILLIAM PERL and L. J. GREENcn e!
n f!
Some Effects of Compressibility of the FloW_thrcugh
Fans and Turbines, December, l9hh, by WILLIAM PERL
and H. EPSTEINI _'" e!
" h! 'A General Representation for Axial Flow Fans and
Turbines, January, 19b5, by Mr. PERL and Mr. TUCKER.
"U. Hr. PERL is at present in charge of about 12 men,
whc_are engaged in theoretical and applied research relating
to problems of jet propulsion, missile design, and supersonic
wind tunnel design. He has shown ability in developing the men
who are working for him, so that they produce a high quality
of research. His group is at present working on the difficult
problems relating to the determination of theoretical
pressure distributions on airfoils in cascades, and are obtain-
ing excellent results. He92has also developed a method of
applying the relaxation method to the calculation of the flow
over airfoils in cascades and in channels at high velocity;
"S. Because of his excellent record, and outstanding _
because of his continued exoellentlnork in the associated
gfields of jet propulsion and missile development, and because
'"cf his supericr,ability in directing the work of his juniors,
'hApproved for change in grade from P-h to P5."_¢.-J9==-brilliance in the field of theoretical and applied aerodynamics,.p~%.
J
M-Ill-'!
I.»
- l l /s/ "ABE SILVERSIEIN
¥-*--~ Abe Silverstein, Chief,u ' A . /s/ ac. KEMPER 2/2h/us
" - 3h - Engine Installation Research Division."
C @- i Q
cg. F. O. M 6 -2 --» "rsJsordI .§ i ' i f -,
,-J - "65 Morton St. Q
92n--Ill-
' Feb. 12, 19b7,
__ 49Addison M¢_Rothropk_ _ _ ___ _ ___ _ >___ _ ___ ___ é4_ _
Chief of Research -
Aircraft Engine Research Laboratory '
NACA
"Dear Mr. Rornaocx,
"I should like to request a year's extension of my leave .
of absence which ends about Feb. 16, 19b7. The main reason for
this request is that I stand a fair chance cf doing a thesis under
von KARMAN here at Columbia Universit§=
"I realize and quite regret the fact that I am more or
less breaking my word of a year ago of returning to the organiza-
tion at this time. Perhaps my present unforeseen! opportunity
of studying under von KARMAN will be considered a reasonable
extenuating circumstance.
"I deeply hope that you will be favorably disposed toward
- m desire to maintain this interim connection wii HAGA."
"Sincerely yours, '
-I I '
- - /s/ "BILL PERL"
"LWOP approved for
l week ending 2-23-D7
by TOUSIGNONT 2-18-L7ELF '
"L.W.O.P- for period
requested by Mr. PERL approved-
/s/ "ABE SILVERSTEIN/elf" .
;§;~= - "approved - _
." " =. /s/ J. n. TOUSIGNANT"-
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cv. F.'ol'_. ' ,-¢¬=
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/ £5_____ "Maroh 10, 19MB.-$.10
"Hr. William Perl,65"M6rton"Streetj ' ' " ' *' * * _ " '** *""*
New York lb; N. Y.
"Dear Mr; Perla _
"This is to advise that yodr leave without pay period
has been extended to June 15, l9hB in order that you may complete
your present semester's work at Columbia University.
"It is requested that you immediately report to the _
PERSONNEL OFFICER upon your return to duty." _
' "Yours very trdly,
ROBERT w. SCHMIDT _
! Robert W. Sbhmidt,
Acting Asst. Personnel Officer."_
- "RW'S':jmo
_ cc A. SILVERSTEIN
fers. RecordsJ< _
Pers. ActionsFiscal '
Empl. Relations
. Files
RETURN 10 Amshe - .
_ 1=sPsom_us;L FILES" _
_ .,;-II.Ei-
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e "Mr. William Perl,
65MortonStreet;" * * * - e e ~- *~ --
New York 11.1, New Yorke
"Dear Sir:
"The Investigation of Employees under the President's
Loyalty Program under Executive Order 9835 dated March 21,
19h? requests that each emloyee submit Standard Form Bk
Request for Report on Loyalty Data and Standard Form B6
' 'Fingerprint Chart. This program must be completed by
March 10, l9bB. It is therefore requested that you complete
the attached forms and return to this office immediately.
A "Your Fingerprint Chart may be taken to the Local Board
of Civil Service Examiners Local Post Office! or the Police
Station located in New York, New York.
"A self-addressed envelope is enclosed herewith for your
convenience."
"Yours very truly,
-4
/s/ "EM .
Emilie Mateyka,
Chief, Employment and
Examining Section."
"ETlClSo
mb"
92_,.;_. =
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___-_e.__/W- . Y. _li_. _i: .s_ .1 _-.l- - _ QAprilel3,eI9h8__-i___ _
MI. WIILIME PERL,
65 Morton Street,
New York lb; New York-3|
Dear Mr. PERLi ' '
"The laboratory has been following your work at Columbia
University with interest and has been very gratified with your
progress. .
"I am pleased to inform you that Mr. SILVERSTEIN has rec-
ommended you for_promotion to the position of Aeronautical Research
Scientist; P-6, $7102.20 per annum, and that this promotion has
- received necessary NAGA approvals. '
an employee
promotion will"Payroll regulations prohibit the promotion of
in a leave witheut pay status and; therefore,_your
not be effective until you report to duty status.
"I am bringing these matters to your attention
know that the NACA has completed all action on its
- to give you a P-6rating.so you will
part necessary
_ "We will appreciate hearing from you as to when you will_
report to duty status. In the event you have any questions re-
garding this matter, do not hesitate to bring them to my attention.
_ Yours very truly, '
,__'e "
l 92_
J
' Personnel & Administrative Management Offic__
l l 1 - .43
Vzmes '
c.c. Personnel
Files -
Silverstein "
-38..
L-I-- -' .92
/s/ JOHN n. iousmmurr
~ JOHN D. rousromurr, -
TJ
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"Dear Mr. TOUSIGNANT,
"I wish to inform you that I plan to
'Clcve1and Laboratory on or about June 1, 19hB.
"May I take this opportunity e¥ also of expressing
my appreciation for the promotion recently granted me?
" Please inform me of any necessary formalities
pursuant to my return to active duty.
"Please call me oh thia
JOF
ll To .
Write letter for my signature telling
him what to do.
JOF n Q
_,-hn£
. -1
"Box BB Pupin Lab. _u,_
IColumbia University
,New York 27, N.Y1
Apr. 23, 19h8
5S9h0
210101
return to the
Cordially yours,
/s/NILLIAM PERL_
-.1-=-1%: -~~ _ _
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- " NACA - Lewis -.a-
92_:¢-zbllr
/ _ ' ."Cleve1and, Ohio'December 10, l9LB.
~¢ F ~TMiEMDIU1N*DUlJ '17}; I;ersonnel_ li£Iicer.7 H W ii I >
Subject: Recommendation for promotion of Mr. WILLIAM PERL,_Chief,
_ TheoreticalAnalysis Panel, Wind Tunneland Flight Division.
'*l. It is recommended that Mr. WILLIAM-PERL be promoted from
Aeronautical Research Scientist VI to Aeronautical Research Scientist VII;
Mr. PERL has been_with the NACA for almost 10 years except for a period
of approximately 18 months in which he was taking graduate work at Calif-
ornia Institute of Technology and Columbia University. Ho has now com-
pleted his course work and thesis for his Doctors degree.-
"2. Mr. PERL's work has been outstanding during the entire period of
his employment. "His knowledge and skill in the fields of theoretical and
applied aerodynamics rank him among the leaders, and several of his papers
may prove to be cla ssics in their fields. During his stay at Columbia
University, Mr. PERL served as assistant to Dr! vofKnRMAN, who has thehighest respect for Mr. PERL's scientific ability.
"3. Mr. PERL is in charge of the Theoretical Analysis Panel of the
Hind Tunnel and Flight Division which is engaged at present in the funda-
mental studies of three major fields: supersonic flow, transonic ilow,
and boundary layers. In addition to supervising studies on these subjects,
Mr. PERL is personally engaged in preparing for publication a new theory y
on transonic flows, which is believed to be a substantial contribution to
the subject. _
"b. Because of Mr. PERL's outstanding researches in the field of
theoretical and applied aerodynamics and because of the invaluable and
irreplaceable nature of his contributions, it is recomended that he be _
promoted to the position of Aeronautical Research Scientist VII. Mr. PERL
is entitled to a P-7 grade according tolthe present classification.
. 1
._ :" I - ' ' ' /s/ ABE srtvsnsrsrn _
. _a ~._ -,_ ~ ABE sxtvsnsram, Chief, A *
' _ Wind Tunnel and Flight Division.
"AS; av.'""" "" CIASSIFICATION REC01-5.EIIDM'ION: December 30, 19118 '
e.»/4 Allocated to class titled, Supersonics Theoretical
' Scientist, Description hO2, Grade P-B, which is pending
- NACA Headquarters approval.
APPROVED 1/7/b9 -» - 1,9;
. _ _ _ . Y-_.-_-- - _
,__ .77 7 i 1
I
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-- I-Q!;-
JB D:jmc
I "NuCA - Lewis .
~.=-.-- H Cleveland, Ohio, F
' _ February 2, l9b9
- ~"-usuoar-mum Fcr'*Chief,*"92ifind"Tunnel and Fli'ghtDivision;" * - -
Subject: Request for official leaves
"1. Official leave is requested for the period of Jaiuary 2h through
January 28 during which time the writer attended the annual meetings cf the
Institute of Aeronautical Sciences and the American Physical Society in I
New York. _
'12. Some highlights of the meetings are as followsi '
~ a! The paper of sussmmm on "me Problem of Drag at High Subsonic
Speeds" was based on the concept of GUNDERLY that flows past airfoils with
continuous local supersonic regions occur theoretically only rarely regard-
less of size of local supersonic region. Ihis concept is in contradiction
with the actual calculations of supercritical velocity distributions for _,
airfoils by the methods of KAPLAN, EMMONS, and PERL. No attempt was made
by BUSBMANN to reconcile these results with the aforementioned concept of
GUNDERLEY. <
' " b! Substantial progress in setting up a statistical theory of iso-
tropic turbulence was outlined by LIN in the turbulence symposium. The l
progress has been based essentially on applying the concept of similarity f
to the spectrum of turbulence. Very impressive checks with experiment were
indicated. The theory is still basically phenomenological. A basis has
been established however for deepending the analysis on the one hand toward
a truly statistical theory and on the other hand for making a start on non-
isotropic turbulence. Much emphasis is being placed on refining and'making|
precise the experimental results, on which the theory is extremely dependent,
These aspects were discussed by CORRSIN,_LAUFER, KOVASZNAY, and FRENKIEL.
The astronomers seem to be taking a great interest in turbulence. For
example, turbulent flow processes in the sun are required to explain the
high temperatures of order on million degrees Centigrade! existing in the
sun's outer atmosphere and responsible for the ultra-violet and x-ray rada-
tions received by the earth. I . fa
. ",*'--'2' . -
F1: Past Ellipsoids of Revolution by an Integral Method" elicited an inquiry
fro Mr. KENT of Aberdeen Proving Ground! as to how the method_compared?ith
the uelaxation method. The impression is that a wait-and-see attitude exists
toward the'1ntegral method pending more extensive comparisons of results with
those by other methods.%{ c! The joint paper by KLEIN and PERL on "Calculation of Compressible.
_ 51 _
k,~ "'0
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. D l G
/ cv. F. 0.
65-2730J Q1z?$?'
- d! The use of the shock tube as an instrument for high speed Pos
sibl hypersonic! investigations and for studies of transient phenmcna anphenmena requiring low free stream turbulence was discussed. The results
pros gted, considering the simplicity and negligible power requirements of
the shock tube, were very impressive to me. Research on this instrument
might well be undertaken at this laboratory; _
! to a stream was presented| The methods used were similar to those by which
the stability of a laminar boundary layer is analyzed. A photograph of the
initial stages of the breakup of a laminar flame front was presented which
~ showed that the theoretical problem is not an academic one. -
ii " f! On the fundamental side, the retiring presidential address of the
a model illustration of how to comheine difficult technical considerations
with a poetic and generally illuminating method os delivery. OPFENHE1MER's
opinion seemed to be that in a couple of years, when_"the mathematics has
' been slugged through," the particle and wave aspects of a field of radiation
is in interaction will have been combined into a satisfactory over-all theor
, "3. In general, the opportunity afforded by the meetings of exchanging
views and gossip with other researchers was considered quite valuable. In
9 my opinion the Lewis laboratory would benefit materially from a wider repre-4 sentation at such meetings.Tr
i 92__ ' _ WILLIAM PERL '
g¥ , Aeronautical Research Scientist.
. I" "WPsaw
F: "cac. Mr. SILVEHSTEIN _
Mr. PERL = APPROVED as/nun
Files "
0- x
VP_-i~' ~
.,
6 .
92 :
92
_ , -L2- -"
,_ d '-
American Physical Society by J. H-§QPPENHEIMER on "Fields and Quanta" was |.
-1:
J
ac:
§___i __9 e!_-Rn.interesting-paper on-the stability of*plane fIame'frbnt§"hormal" g
Y.
I
./'
.-_*_._,._ii____- -w~
* ' 0
@w_ F. 0.
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J "D:jme
92hnqun "Personnel _
' Records
"From LEIIS
To NACA Headquarters
"Subject: Request for authorization for the detailing of LKWRENCE
J. MEEM and'WILLIAM PERL to the Oak Ridge National '
Laboratory. -
"1. As a result of Mr. BEN PINKEL's visit to the Oak Ridge
National Labora on November 22, 19b9, it is considered desirable .that LAURENCE Jgggél and WILLIAM PERL be detailed to this organi-
zation for a period of approximately one year to undertake certain
research investigations for the NACA. i
"2. Approval is requested for arranging directly with Dr.| :fQEINBEHG of Oak Ridge for the detailing of these employees and for f
- authorizing the necessary travel. It is recommended that per . . r
I diam be allowed during periods of actual travel and for a period
I 30 d s after arrival of the above employees during which time 0 ay
they will have an opportunity to_aecure suitable living accom-
modations. _- . '
' _ /B/
ABE STLVERSTEIN,
- Chief of Research.
JDT'mes
@=.:'_~¢-
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92""' ' - 113 -" '
- _ .__ _ 7 _ _*:* " -| l
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Lam-zns mum: IN PERL'S .u=A3ru1a:p§
A _The following material was copied from data obtainedduring an authorized search of the apartment at 666 East l03rd Street,Cleveland, Ohio, than occupied by WILLIAM PERL:
_-it 2,
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Re 711, New York 22, N.Y., U.S.A., end bearing return address Th v. KARl»'_1H
Cal _;QiB Hotel, l6, Berri Paris, Be, is es Iollcms: ' " 1 A letter addressed to Mr. ¥E[LI..IA}-! PERL, S70, Lexington Avenue, "
! - "Th. v. Kareem ___ _ ____ _ _e _> _ _-.-* ~ -~- - cen1<>r*n1e*a<>te1 "
b 16, rue de Berri _
Paris July 13th 1947
Mr. William Perl
Deer Bill:
"We safely arrived in Paris. '
"I contacted various French aerodynamitists and find
they are engaged in the same problems as we are. '
"I found a fellow who works in conical flows and
another man who works on detached shock waves. I think you -
ought to work on the latter problem. Nobody is yet so far, but
sometimes they will get there.
"With beet regards,
1 Gordially yours, _.
I,1Th. v. Karmen"
+1-x-n -
_A letter addressed to Doctor William Perl, Aerodynamic Institute,
Cornell University, Ithaka; U.S.A., and forwarded to Dept of Physics, Columbi_.a
Univ. New York, New York, bearing return address. oI_Ei.dgenossische Technische
Hoehschule Institue far technisehe Physik, Zgrich, is as follows: _
! '
" _ - Doctor William Perl, ' /"* :
,-_*"""" Aerodynemic Institute, "
~_- Cornell University,
,; Ithaka, U.S.A._ , _ .embe!' 4th 1947.
Dear Doctor; ; - -
-145-
r. ,_ V -_ .- _ .,-_._,__l_.-_-"---4 _ __ i________,,_ __._~..,_----- -- "'3-'9 _:_:__ ~-- __74--- - ZL
I
cv.,£g?" as-A2l "On the occasion of a meeting in St-Louie France!,
niy coworker, Hr. E. Roth of Lueerne, and rweeli were
able to discuss Windperturbation-problems on trajectory
with Professor von Karman. We also considered projectiles
under the influence of an oblique air stream and Pro-
fees0rvon~Kar1nan"5uggeSted'*that'"I"8hould write to you I
asking for some more details. He told me that you are _
very well informed in this field. ;'~_'--_._~.¢_2'
"I should be greatly obliged to you if you could let
me have particulars oi the recent publications in U.S.A.,
especially in connexion with the work of Drllfréien, Calif.
Institute of recnn6I6gy. .
"It might perhaps interest you that I have spent 2 years
at T-he Calif. Institute oi Technology, where I became
very well ecquainted with Professor von K:1rman.-
' Very sincerely yours
l Dr . R}£'$aenger"
_ at # -u
* ' A letter addressed to Mr. William Porl,_Box 88, Pupin tab. ,
_C_ lumbia University, New York 27, N.Y.; bearing return address Theodore1%-man Hotel Cal:Lfo1_" ia, Paris, is as follows:
! AFob. 4th 1948
"Mr. William Perl
Box 88 -
Pupin .
Columbia University ~
New York 2?, NJ.
"My dear friend: 4
; "You are really the man who makes my conscience feel.._ l
'-no
.1
'1
-_-gr. L
I
I
f" badly. I feel that I let you down somewhat, however, I want you; __
'_._,.___-.--..
' -146-to ioel'that this happened only because I could not do othervvis? ,
I
I
oi " Q
CV0<55-27 o '
1 "I hope that you devoted your time to useful studies 1
and if I get beck you show me many new things. 1
92.u-==s- .
' "Scientifically my stay in Europe did me a lot of good.
I had some time to think over many fundamental questions and since
I lost some of my interest in suporsgpiquaerodynamics,iI_spent_il___U --_- i" _..lL~'
A .1
:
.4.-your,1
I** " cIctsi6f_tiie studying turhulence. '
_"I am, of course, still interested in the transonic_ -
_problem. A few days ago I talked with Professor Hadamard who is
cvor 30 and still working on existence theorems of the mixed
solution. He showed mc an old paper of H=rry Bateman in which
Batoman poses the question of mired solution very clearly. I was
rather surprised. I have never known of this paper of_H:rry.
"Professor Maurice Roy complained somewhat bitterly
that we did, not include his_name in the bibliography of my
lecture on-Supersonic Aerodynamics. I believe I gave you this
paper so I put all the blame on you, I hope you do not mind.
_ _ "Now one practical question. I wrote to Lillian Fricker ,
and asked her to make some preliminary work for the preparation
of my incometax return. I imagine that my files are in your
custody? Please be kind enough to help her. I asked hcr to
either go to New York for a day or to write you to tell you which
files she needs for the job. I thank you very much for your
cooperation. . . .
Hy sister send her best wishes and I remain;
Very cordially yours,
Th. v. Karman"
_ - * 4 u
A letter received from E.B. Badger and Sons Co.; 43 hllston St.!
Beacon Hill; Boston l4, Massachusetts, with the Salutation "Doar Will"
is as follows: f _ .
<4! ' in/15/4a '
Q "Dear W111; , . -
"I hesitated to write you any sooner because I wished F
'r85 sop up as much-of this new life as possible so that I may
. _ L7 _ .
i i_ ____ .__,,__.._-_,..>_;:?.¢_- » -I-_"". ':_ ""' zi _ 7 - "'* I '
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4
rural
tr.
h|Z92.s
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x
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65.-2 10 ' . -
' "make more accurate statements with regard to present conditions
and future plans. My'immediate feeling is one of intense happi- * ' -1
noss. Boston is offering mo everything cw senses require for
satiation. The work I am doing is'vaguely similar to what I
learned at school, the §Q§§i§iQn§_Qs§e_0nthc_jpb_are_mo$t_____ _
plo¬santj EnffE1Ie% workers ore most helpful in offering me their
advice, instruction, and time, & the pace is not killing}9292=-.-_.u1-
"Besides my work, Boston offers me music. I have enrolled
as a special student at the New Englan conservatory_and have .
embarked on a rigid work schedule beginning at 8:15 A.M. at which
time I punch the time clock at Badgers. 92Punching out at 5:00
I dash over to the conservatory where I punch my first "A" at
6100. At-10:00 PM I stagger out quite punchy. How long can 1
a body last at this rate?
_"It.is some strange quirk of justice that I find mself
new at the N.E.C. P;rhaps you will remember that after my dis-
charge from the army I was undecided whether to study music or
engineering. I wrote for the catalogues of several out of ten
music schools including the N.E.C. but the overcrowded conditions
at that time was the prism £actor_pushing me back into the
engineering grist mill. Its a bit frightening new to contemplate -
shouldering both engineering and music for a lifetime. It leaves
time barely to do one's laundry and take a haircut. Hy strategy '
is to delay coming heme for a visit as long as possible. Explain
to my family/fer me in your own innimitable way, will you. _
Sam"
* & 4 <
'A letter addressed to Mr. William Perl. Bum 88 Pupin Laboratory,
Columbia University; New York 27, N,Y. U.S.A., and bearing return address.
of Dicnst Dopartement van Onderwills, Kunston en Wotenschappen, Laborateriu
voor taro en Hydrodynamics der Tochniecho Hoogeschoel, Delft, Nieuwo Laan
76, is as follows: f
Q .
! ,".L__- "Delft, 27th of April 1948'
-f Nieuwe Laan 76 . -
iv ~ Tolefson 1310
- ' -_ . - _
_ _. _
. _ Q3 _
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' £9. @ '
.
_' 49;_'T;-
cv.- . I i 1 ~ J6572;» I '
i . "Mr. WilliemPcr1- i
__mJp: - Box 88, Pupin Laboratoryjr-'
. Columbia University
New York 27; N.Y.
--' -- - *- r W Wlncaf }_!TT_"Pe'I-1, '
"I certainly would bo glad if you should come to Delft -
for doing research work in fluid dynamics. Under the present
circumstances this would have to be mainly theoretical mathema-
tical! work. From your letter I gather that you have been
occupied with supzrsonic problems. C:n92yJu indicate somewhat
more extensively what you have done? '
_ "3avo you done also eny_experimental work, either on supe-
sonic flow, or on turbulence with hot wires and amplifiers, -
etc.! 7 - - -
"How long do you intend to stay at Delft? After the summer
vacation regular work will start here about October in Sep _
tember I shall be absent most of the time in connection
with scientific congresses!. .
"I suppose that your nationality is U.S. DO_yOu get a'grant'"
from your university for coming over to Holland and for living
here? It may be convenient if you would communicate your full
name, date and place of birth, and whether your are single or marriedo -
With sincere regards,
yours faithfully,
J. Hiiurgers"
4+-I-* -'
A letter addressed to William Perl, c/0 YMCA 3200 Franklin Bled.
_ Clevelarri 13, Qhio, and bearing return address samuaziéeri 936 Tiffany 3a., _
Bx. S9, N.Y., is; as follower '
! z-'5 A "936 Tiffany st."
Z. '92_ Bx-A S9, Nay: _
1- June 9, 1943- ' - -
'*"*" '-L9- '
,_ ...k_. --, e _ ._ ___-7--92_ ;_~_ _' ' _ _- :
~ at e
cv._F 3 >-
65-_2 o
' "Dear em,
" = p "To bring you up to date, here is a ohronoligical " "
listing of my recent manouverings: .
--~~ -* - 4- "l§*~$tarted"negotiations"withE.B.Bedger&TSohs'60"
that I may be employed on a part time basis in order that .
I may study full time at the New England Conservatory. V
. "2! Negotiations fail. Reason given - a precedent would
be established which would threaten the future serurity of thecompany, the Commonwealth of Mass., and92civiliusticn as a whole.
"3! Left for N.Y. on vacation to shop for a music school.
Spoke to musicians and p2Opl0 in general in order to clarify my .
thinking and enrolled in the Juilliard Summer School. '
."4! Returned to Boston and quit my job.'
"5! Returned to H.Y.
Sam!
K ii *
_ A letter addressed to Dr. wu. Perl Flight Propulsion Lab. of the
National Adv. Committee for Aeronautics, Ckzveland O!, and bearing return ,
address of Dr; Theodore V. Karman, Rihrritz, Hotel Carllon; is as follows:
! "Bierritz, August 10
Hotel Curllon
"Dear Bill, .
"This letter considers my sisters car. At one of m
previous visits I aggrood, - really without consulting her -
- that you take the oar to Cleveland in order to facilitate your
movements from New York to your now post. The idea_was_at that
r time, that we return to New York in June and you bring back the ,s
;,-Y/' car there. - -
,' . 9292 I .92_ 2: '
I aged?-$~" ' 50 -
_--__ ___, , _ _v____ ""'
.~ @ ~16?
2212;-,¬"~ r ~ ti
2 .I i _ "Now, that we stay in Europe_til1 November, we want I
to cancel your use of the car. M sister is very anxious to '92_.-
' have the car to her free disposal. Therefore please be kind
_ enough after receiving this letter, but certainly before . -
_ _;; __ i Septrf. to bring back the car to the Brown§ in New Jersey._ My' Z '7 "sistef did'ot lire theWthBle'Heal;_esbeeially ée5h5nT§ane**
your action without askinghgr directly.
_PI have now a few days free and intend to read carefully '
your scientific production. This in a next letter. _
92- _ 92_"With best regards yours cD?gé2;y_ .
Ty,92arman"
-11- -!l- 41>
A letter addressed-to Mr.'Wi1liam Perl; l2E7_Erockley Avenue, '
Lakewood 7, Ohio, and bearing return address of Clyde E?Brown, FairchildPublications, 8 East 13th Street, New York 3, N. 1., is St follows: '
8! _ "August 20, 1948
I."" I-
Mr. hlliam Perl, .
1257 Brockley Avenue,
Lakewood 7, Ohio
Deer Bill: : .
hwe have a house on Long island for the sumer, and Mrs.
Brown is there most of the time now, so that,I received your letter
at the house when I returned there last night. -
' "OI course, it is all right to bring the car there again.
It is probable Mrs. Brown will be there when you arrive on , ._;,;LScbtember 2nd or 3rd, but if not just go right ahead and put it ;?: '
9' in the garage and leave the keys under tho front seat. If you _ -Q
{_ arrive on Thursday afternoon the gardncr will be there, an ii you
%- arrive Friday afternoon the maid will be there. *2 fl ll -51- ' l
_ i__W7iV _ : : ~__r i_'___ . -»I
%é:.§-}s§"'" s
1 5 _ "You may telephone me here at the office ani0 " e
-11;
we-can arrange for someone to be there when you arrive,
r-but that is not really necessary.
, .Y-sf
-"Best wishes. '
_ i._ 7- in-_-1 7» - - » >- Li < - 7 '_ '?"" " i *7 ' S ncerely,
Clyde E. Brown"
& * n
A letter addressed to Mr. Will Perl, l2S?_Brookley Ave., Lakewood 7, J
Ohio, and bearing return address of Joseph pJnBlum, 7923 - 209th Street,
. Utopin Station, Flushing, L.I., is as follows! .
9!
Z
if."Sept 5, 1948
Dearest Will,
"Before receiving your letter, I had already made up
my mind to order the Encyclopedia Americana - I had seen it at '
Carrie's home. They have been enjoying it for a year. The Q
deluxe edition, which looks like En Br - is 249.50. However,
they have a maroon sealcraft binding without gold_loaves which
they sell at a special price of 169.50. Besides this,_for paying
cash; Eleanor got e premium of six book of Nature, on Butterflies,
Insect, Bird,-etc. We got a good Funk & Wagnoll dictionary. The 1
set amounts to about $175 with shipping charges, '
"Bobby made e bookcase for the 30 volumes. We have the
books already because the salesman delivered them himself from
the stockroo.= Others advise it is 8 weeks delivery &_since we
.paid for same, I think its foolish to wait since school starts
next week & we wanted the children to have the benefit of same.
They run a Research Institute like En Br - 100 coupons
are given for ten years & we can send for an exhaustive treatise
in an subject. They do original research & this is a wonderful
service. 3 'I - 0 I
,/_~Z1b ._I'_ "You might avail yourself of this. Bobby is sending awe
a coupon for telescope since he.wants to build one. -
'-. _ .
.- 52 -
e v is
cv. g. " ,65-ETQO - § D' ! r I »
. "The books seem very worth-while & the children are 92-- t
?" ?eolly enthusiastic about them. You are very right about them '
being a long-term investment in good thinking.
- v
"They"aro_a_movement"£o your sagacity §good will.
comes in is very mmch impressed & when we say you bought
a present for the children, everyone remarks about what
brother I have. . -Whoever
them as
a grand
"Joe hasn't seen Sam yet. However shall we give him the
Shall we deduct the $175 - from the 400 income and you give
him the balance of 225. That seems likea simple way of cancelling 5
our debt & yours. Or do you have another suggestion.money.
"We are looking forward to seeing you in hovember & your '
seeing the books at that time. They are a focal point of our living_ room. 3lso,.for ten years we can got a year book for $5 - to keep ,.
us up to date, i£_we want same. ' |
- "Bobby is getting his treatments.throe times a_week. ,
Shortwave diathermy. He limps slightly but otherwise is getting
along fine. . .
- "Stephan Michael is gorgeous. '
. 1
"P.S. Contrary to popular opinion I om not crazy as my mother thinks."~ 1"J 1
-If-It-41'
A letter addressed to Mr. hlliam Perl, 3200 Franklin Blvd. Cleveland
13, Ohio, was marked "not here" and returned to-tho sender who then sent it
to Mr. William Perl, NACA Flight Propulsion_Research Laboratories, Cleveland
Airport, Cleveland,.Ohio, bearing return address o£<Frickor, 694 Crestview
Ave. Akron 2, Ohio, is as follows; - .
0! . ' i _"Ph-one; Uwiversity 4310 '
. 694 Crostview Avgpue. -' Akron 2. Ohio ,_ _§;_ September 6,l94B_ Labor
: 9292_ Day!
v
- in _
_ 53 _
v________ _ _ _ ,_ _ 4 _._92_ -M->-if r '*""" " ' "- A ' 7 ,
' 3
92, ' 92"'-" 92
bi
"r
~91 .
.0-.
é .
is
#4
I
vG .
- -,r.- ..q_,-
'.r<i-1;»
.
'1he W Q
cv. r; . _
as-233
"Dear Bill,
"Thanks very much for your letter; it was forwarded to me from
Boston. -
.n.-- . »- - - - -* " _ *"" ' 'A" ' ' "7 _7_Z 7I have been in Akron since the end of July, because the metabo-
lism ward closed for the summer and I expect that it will re-
open on September 1S. For the past three weeks, though, we '
have been away-from home. My family took me along to Canada
for a vacation. we had a lot of fun and phenomenal luck with '
the weather. I'm glad that we missed the awfully hot weather
of a week or so ago. We stopped in Toronto for the National
Exhibition and in Niagara Falls forte quick trip on the "Maid
of the Mist."
"A11 your news about the Boss movements was a complete surprise
to me, because when I talked with Mrs. Schneider she know nothing
about when to expect him or what to do with the mail that was
accumulating. New that you have met Marie you can see that this
is the eternal song of each successive secretary, and you have
yet to meet the long-suffering.one out at Caltech. It's a good
thing you have broad shoulders. . -
"I think it would be very nice if, while I an in Akron which
be for the rest of this week and next week-end, unless I hear
otherwise by then! you could drive the "Karman Plymouth" down to
Akron and haveldinner with us. You probably know that Mother
got home last fall and that we have a home again. Do let me
know when you could come. If I find out in the next few days
that I will be in Akron longer, I will drop you a card and you
would have more choice of time.will
"I hope you'll be able to arrange it and I'll tell you anything
you want to know about out experiments; fiendish and otherwise.
. Sincerely,
_ Lillian
I
"1 A letter addressed to Hr. W Perl, National Advisory Comm. Io Aetd" Clevelabd Airport, Cleveland, Ohio, and bearing return address of H# lo:es,Box BS,92fupin Columbia University, New York City, is as followsi §
>1%! ."
._§h.._- & * * {Jr
5I
i
__-¢i
e s
, ' _;~a.1.nl'
cg. F.6. 1 - ,6'>-2730 ll! _ » as ~_,
92*"""" BOX : .
Pupin Physics Labs;
Columbia Qniq9rsity,__r_ _4 _.._ __ - - e 'NdFY5?Cimr _ A
September 18, 1948.
"Dear Bill, ¢
"I'm afraid I've been very much remiss in my correspondence.
However, though the sumer was pleasant, nothing important enough
to write about his happened. 9292
"I'm sorry I missed you when you came to New York to see
Von Karman just before he left. Were you able to catch hum? '
What was his reaction when you showed him your results? If your
paper is finished, and you have some extra copies, I'd like very
much to see what your final results were. -
"I spent most of the_sunmer teaching. In the first session ,
I taught physics 3 and 4 and completely understand your boredom with
these courses. Physics ll is much easier and therefore pleasanter. .
The students in physics ll can think for themselves and_aren't
_ always afraid to make a move without consulting the instructor. In
the second summer semester, which has just ended, I was teaching 11.
It was a lighter load than in the regular winter or spring sessionsbecause fewer-students signed up than expected. '
Kocxman's and Seitz*s course in the theory of partial diff.
equs and theory of solids respectively were both very good, except
that I had had most of the material previously. Seitz is very
meticulous in the preparation of his lectures and they were very
worthwhile even though largely descriptive. '
i
" "I finally broke down and bought a Diroe and studied it
. through nest of the summer. I'm about 2/3 through. Ifound it very
good even though his treatment of almost every topic is highly
unconventional. I spent much offmy time correlating his results ,
_ with thosepof more conventional authors. Diroe, however, has a '_;r
g "fie materialistic outlook which most other writers don't have. I"m
;'! finally learning what second quantization really is although '92I --
.j. I'm having trouble relating Diroes treatment to that of nfentzel. H
-1
--- _ ,
..
__ _,.,___----, ._# ~- .-»_ ____ __i___ 7 _ ___; i __ . __ _Ai;-__ _
:c an e
'.
_ __ /-92il
cv. n"
65-2730, ,
"This Fall I'm taking Bethe's course in nuclear physics
__h§nd his seminar on elementary particle theory. I'm also going to 92
start seriously on the problem of pressure broadening of micro-
wave absorption spectra. Itjoccurs to me that if the resonance
line width can be related to the pressure_inrscme_simple_enough~way~
____J_4 ______.that_it~mightbepossibIe"to*c6h§t?EEt'Eorowaves or inIrared
equipment which would measure the_pressure at various regions -' '
in a_steady state fluid. Though it is very premature to talk about
such a possibility, do you think the NACA could be interested in '
constructing such a device if it appears feasible? Here at
Columbia they would not be interested,92of course. Here they would
use any results that I might got for theirradar work. .
_ In this connection I noticed in the most recent physical
Review Sept 15! a technique for using the Debye-Sears theory
of scattering of light by sound I read the D-S article some time-
ago! to cause_mcdification of light for turbulence measurement.
Whether this method has any importance I don't know. -Its
As ever
Harry"
* 4 #
A letter addressed to William Perl, 16802 Larchwocd Avenue, Cleveland,
ll, Ohio, ad bearing return address of Samuel Perl, 936 Tiffany St., Bronx :
59 N.Y., is es follows: -
2!
r "Dec. 31, 1946
' Dear will; , _
"Your first reactions to the keyboard are probably exactly
just what Howowitz experienced when he had his first contact with '
the instrument. "Keyboard helplessness" is everybody's lot for
the first few years. You should5nct get the impression that the K,
/rzhole business is a conspiracy against you. Playing the piano well_
kg is a problem, tho solution of which may be gained if the proper
1 forces are brought into play against it. These weapons are-
J1 *-Q? "
_§6-,1
'0
I
I
&Jcv. r;gT '65-2'{3
- 4
{;,_Js-s period of Efree play." You should never sit down at the
3!ii--T--i-
92 .9 <9
"1! Dili once: A daiiv schedule of practice Iolloved
1
D¢--Q...
piano unless you can do wh~t_is on the docket in a musical manner.
This can always be done if speed is sacrificed at II?EtT"Y0u
the feeling that your mind has control of your fingers.
"2! Eatiencea This includes a leathery exterior which
must withstand all types of criticism by friends, neighbors, lend-<
lords and especially relatives. For the first doyln years you
may very well be a sorry looking figure at the piano to those -
who merely pass a hasty judgement on the_matter, but if what you
have started is to have any meaning at all in your life, you mus
be able to take the hurt, the passing slights and disregard them
"I recall seeing the name Elizabeth Sher on some poster
in e N.Y- conuizall. She studied with Miklos SchwalB not '
, Miklos SchwalD; I would be very much surprised if there really
was e Miklos 5chwalD. ' .
"Eleanor took her first lesson about a month ego, and
according to Ann will be ready for her debut soon. However, it
_ is furiously exciting to contemplate yor respective musical
progress es!. Its the old question, age & wisdom versus
enthusiastic youth. Don't falter - I'm betting on you.
-I .
Sam!
Niki-twill_never be abhej_p1;y,any_passage-fast~unlcss<you'can'pI% _*"_ -
itjslow'='so4p¥5etice slowly, in correct relative rhyth, and with
J
A_letter addressed to William Perl, l6B02 Larchwood Avenue, Cleveland
ll, Ohio, and bearing return address of Samuel Perl, 931 Tiffany St. Bx 59
NQYQ, is GS - .
A ' "June" 19, 1949
Dear W111, §
§r ' "I read your letter with a combination of amusement and
.i dismay - amusement over your general sad shape and dismay over
your slow progress on the piano. What kind of progress can you-" your musical obtuseness. It points to a faltering intelligencei that you have not discovered the real reason for what you term
__57 _
I I9
0
,~v-2212;? -i '
na-
expeet when you devote but 3/4 hour per day to the piano. i
Had you given that same time to your general and technical ~i-
~a:~eucation you would probably rate no higher than a Tasmonian .
Pinhead or its American equivalent, a P-1!. At first, I
suspect you carve out that 3/4 hr. in the evening after your _____4 _,__ I
_dayslwork,~when-yourmot"vital"energyie'alieEd§'EappedQ~l
can't emphasize the fact too strongly that an hour's practice
upon awakening from a restful nights sleep is more profitable
than any amount of time spent bent over the keyboard in a torpid -
state. I would conclude that under your present set-up any"
.9292 _
9292
N-**
A letter addressed to Er. William Perl, 16802 Larchwood Avenue;
Cleveland ll, Ohio, and bearing the return address of Taller and Cooper Ine.,
75 Front Street, Brooklyn 1, N.Y.; is as follows:
- 4!
* _- I
_."December 20, 1949
Mr._William Perl
16802 Larchwood Avenue
Cleveland ll,_Qhio. '
Dear Mr. Perlé A I
_ "I have your letter of December Bth offering your help
to the Technion, I think it is very thoughtful and it is very
mueh.appreciated by me and all those interested in this work.
_ "At the present time our wind tunnel plane are still j '
in the formative stage, but as soon as technical help is necessary V
I am sure that your background should be of great value. ' -
I"With kind personal regards and good wishes for the ,»=
lkm Year, I am ' _ ;,
J Sincerely yours, ' :5,92 .u
TALLER a coopea, INC.
.-' &~ :,e- B. Coope¬'
. - 55 -'1
~ 0 » e
cv. r. ' '*
as-aqeb '
-'. I. -' 6
B,_lQSO| . ~_...
92--....|=-5! "'
1"The fo11o'.'.'ing is a letter written to "Dear wui, and dated Februaxiy
' - 1 .
"February B 1950, ___
Dear Will, '
?I'm just writing a few words to say hello to you. Since
last seeing you, I have held two jobs end am now working for theGovernent in Washington, D.G.. - 9292 .
9292 . <
"As time goes by, I'm starting to see, more and more, .
many of the points you brought up when I saw you at Columbia.
So far, I've been doing back work in engineering and haven't
quite adjusted to it. I have enough ego.to feel I was cut out
for better things,! _The answer is more education and I am -
studying now for the Graduate Record Exam which will_be given this.
May; If things go well, I'll start a master's degree, full time, '
this Fall, and try to go through a doctor's degree. The I
Government will still pay for two more years of'schooling under the
G.I. bill. I hope to take the above degrees in the electric
power generation end transmission field.
' "It is strange how the things you brought out about a
person's work being the most important thing to build his _
life around,.has been brought home to,me in the several jobs
~I've had. I'd like to thank you for the talk.
"At present, I have a fairly nice three room apartment
in Washington about five blocks from the Capitol. I share it
with another fellow and the place can sleep four. '
"If you want to come to Washington at any time in the
near future, on business or pleasure, you have a standing
invitation to stay at m place; ,
_ _ "Sam has not written infa long time so I sent a _
letter off to him last wook and will probably hear from him
in a week or two, 5,
_ _ , . i92 ' 7- "I hope you are enjoying your bresent work in Cleveland and
perhaps catching up on your cultural activities, now that your if-2 . _ -.§ Uformal" education is over. '
-¢z~ '
- 59 -fé
.- 92
IT.
L9.
fl.
t
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'1
, r~»
-92
1a-
3A A 7 »~ _ - V ._.i-..-____
i I
~ o = o
cv. P.0.
6512730
. - "With best regards. .
"9-'-*~" ' 92'-" "b morris¥Eirnbaum '
*__' H _' ' *' '* *4];1"'Seco'n'ii' Street, S1131" * - ' "rr
Washington 3, D.C."
# * *
92 A '
A letter addressed to William Perl, l6802_Larchwood Avel, Cleveland, Ohio
U.S-A., and bearing return address of Samuel Perl S3 Ruo Notre Dame do foretta,
Paris 9, France, is as £ollows=
llé! ': .
"81 Rue de Manbongo
_ ~ Pairs 10
Fob. 9; 1950
Dear Will, _ u ' 92 '
4 "I have just returned from a piano recital and I imaginemy feelings to be rather akin to yours when you attended tho
Physical 'ocioty meeting, namely one of "exaltation and dcspairs
This business of playing the piano has completely overtaken mo
so that I'm really not fit comany for anyone, save similar '
frenzied souls. I suppose that you must have had the some
obsession and still do! in your field in order to have roachod
the position you non occupy is it P-64 by this time!! For the
past four months I've been working S an 6 hours a day on the _
piano faithfully doing everything my two piano teachers have been
whispering into m ear. l teacher J55? for technique, all in all '
3 lessons a week on the instrument!. I have scarcely been out
and tonight marks some sort of turning point I feel. ,Its a
combination of some "broken erpeggios" I've been working on, re-
ceiving your lettor, and hearing this pianist Eleanor Fine -
that American kid prodigy grown up into young uamanhood!.
. . ,,_ -
i~ v _PIts all added up to give me renewed hope and direction.§'
-- By the time you receive this letter I will have unved into new- '; __
lodgings, Note new address above. The only basis for this mmvé.j
is that this new place is more suitable for work. My future iil ¥-¢r= ' Q ' . . g
- 6Q _
0
I
... Q W Q
CV4'lCEi-_> { " J30 ' . .
92__ "morning rm 1e at night. That's o 14 hour interval. Figure '
S hours for meals, ablutions, and miscellaneous and you're loft _
with a respectable working day of 9 hours. '
" "I shouldn't like to give you the impression that I'm
optimistic about success. There are times when I fall back
exhausted after a practice session and canit sleep-because a
terror overtakes me. I think with dismay of past years when m A
energy was turned into channels that I was essentially uninterested
in. New in my middle age when my vital energy is on the decline
I am wrestling with the problems that really fascinate me; viz -
how to make those little black notes on the printed page in a
Beethoven Sonata really sound. A.werd ebeut_hcme. I got a disturb-
ing letter from Sadie telling me that she sold my engineering books
so that she could have enough money to go to Washington where
she_landed a job with the Govt. Thats about a month ago. Haven't
heard anything since] Has that girl gone completely mad? She
also mentions that there is mail for me but fails to forward it.
_ "What a moss. It gives mo an empty feeling in the stomach
Just to think of it. Fooey on this external world. We've got -
to seek happiness within ourselves.
_ "Its onward to more and bigger senates, etudes - - Good-
night now. Though I may not write to you often, be assured,
that I think-of you and what you have taught me in the past.
Sam" .
: * e * '
I -The following letter written by Sam and with the salutetion
Dear Will; is being set forth. .
7!
i"
~' I "B1 Rue de Maubeuge
_ _ ' -Paris 10
;-1, ,_ May 2, 1950. J,
"Dear Will,
. "Though you caution me not to worry, you letter made me "it
92=_a;eel sick at heart. The same emotions of indignation, astonishment,
. , _ 51 _¬ 'proprietaire' assures me that I can hang away from 8 in the !
Iti - - Q
65-?73o_ A _
Q *und disgust which you have experienced are new besetting me. g er". i -
v -Up until now the antics of some of our congressmen have only T
struck me as comcal, but when they strike home, the matter
__ __t T J»-'='%<_*>== _9¥92_s;_mr>&@.:=£'92*'"5r_'=PPe;1t@-[email protected] a -
"I ran into Joel Barr at a student's restaurant where
we both eat occasionally and questioned him about this development.
He claims that he never was a Communist and that he doesn't know
the whereabouts of Alfred Sarant. -
"I don't exactly know what to say to you in the way of
comfort, maybe what you are now undergoing has been so often re-
peated to others that some form expression of consolation should
have been stylized by now! except to say that its not too late
for you to start studying music; There's room where I'm staying for
another. I've been thinking oi filling this void with a woman but
I'm giving you first preference. How about it?_-I believe the '
saxaphone would suit your personality. '_
PI have been re-reading your letter of April 2 which was
- e wonderful letter you were really in top form!; a letter full _
of lovely sounding phrases such as seeing God in terms of the
languages we are learning to speak sol1borious1yv and others
- equally glorious. As a matter of fact, I took it along with me
on my Easter vacation reading it from time to time. -- .
"1 took a hitch-hiking trip with a Scotch girl a medical
student! down through France and then over to Geneva. '_
- "She is exceptionally intelligent and sympathetic person.
so I took the liberty of reading some of your golden words to
her. she was particularly struck by the line, Keep in touch
with the world, draw an occasional bit of sustenance from it .
and a check on your direction but otherwise concentrate on your _
individuality, that the world can drew sustenance from you later_ _
on. She claimed that although Bhu didn't know you she liked the
~ person who could have spoken those words. .
"My own progress report'_is all too brief. I am working ;".'/', ona progrmn, preparing sovcral pieces to play before an examiningT'
_ f jury_at the and of June. From now on I have to start producing =so
I turn my face on the world, bury myself in my task and prepare fan.
knqn.that I died in the attempt. -§ l" ' , ..
"Keep me infonnod about yourself. -_ ',. ggn K 1; '
- ' ~ 62 - ,_»~--" the onslaught. If you don't hear from me in the coming months you_'_'ll
~.~. Q l Q
CV. fed.
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9292.Publications By Vlilliam Perl 1
A11 classified as Restricted! _:
Katzoff, s. and Pofl, w.: Tho_EndPlate Effect of a
._~Hor_izontal-Tail »suriece---on--a Vertical Tail -Surf-ace.
NACA TN 797, Feb. 1941.
Perl, W.: The Calculation
Swept-Back Win;s. NAC-A
Per-1,W.| Axial-Flow Fans and cooling Pewter, Part VI of *
High1Lltitude Cooling. NACA ARR_92IAIllo, Sept. 1944.of Span Load Distributions on
TN 834, Doc. 1941;
Perl, 97.; The Uonionnal_Transi'crmati:>n o£_an Airfoil into
a Straight Line and its Application to the Inverse
Problem of Airfoil Theory. NACA ARR L4K22a, Dec. 1944.
Perl, W.a A Solution of the Direct and Inverse Potential
Problems for Arbitrary Cascades of lkirf oils. NADA '
ARR L4K22b, Dec. 1944. _ "
Perl, W. and Green, L. J. ; The 'Iwo-Dimensional Incompres-
sible Potential Flow Over Corrugated and Distorted
Infinite Surfaces. NACA APR BEADS, Jan. l94S.- -_
Perl, W. and Tucker, 15.5 IL General Representation for
Axial-Flcw Fans and Turbines. NACA AFR E5304, May
1945, . ,
Perl, W. and Epstein, H. T.: some Effects of C3mpI6S8i
bility on the Flow Through Fans and Turbines. IIRCA
ARR E5'-3, July 1945.
Perl, Y-i.i On the liinixnum Pressure Attainable on an
Airioil in Mixed Subsonic-Supersonic Flow, NACA ARR
to be published! ' - ' -
Perl, W, and Moses, H. En ' The Jot Boundary Gonstriction
Correction for Symmetrical Airfeils in a Closed Tunnel;
. A Solution by conformal Mapping. NAGA ARR to he ' i
published! _ '. .1-"g.¢
-53..
12, _
__ _ i A Il>§efnt_ia_l__I-'Q.<1v:_s_.__-I92l[92 §A .92.R.R__ t-3 be pub1ish.:d!-_ ____ _ _ H -cv. -Fx-'.
as-'27,-30
Q 11.
92,_-.
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$3- 1*92_ ' .1Perl, W. and Hoses, H. E.: The canformal Mapping of Two-Dimansional Duct Inlets. NACA ARR to be published! 92-~ i
Perl, W.1 On the Calculatipn of Mixed subsonic-Supersonic
92
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- - - - -»LEADS -
Since all requests for investigation are
leads are being set forth in this report-4
beinz net
' s of this report are being furnished'to
~al' willCopic
those offices who have hao or logi. i,
have investigative leads in this matter.
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REFERENCE: Riprprt. of SA JOHN P. O'DONOC~HUl3, Cleveland,
8 7 SO.T-3.
T-2
T-3 WILLL"J92'I . G1BBONS, Director of
Personnel, I~L'.C.-., Cleveland, Ohio.
4A T-|.|- informant es
dub rm 1n the report of S1192.
92
A7
A _._o
92o
nnvuonn J. FOX dated Hay 10, 19b9,
at Baltimore in the case entitled
"ROBERT PJBSE-IICK; SECURITY MATTER - C".I-5 =I
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*- -"~r*¢'. '"' . . " I T-5 @?§5:!;§ 3iEy;;,", 1ni.or'mano as set. 92/forth in the above mentioned report, '
of SA RAYETOND J. FI'X
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FEDERAL BUREAU OF INVESTIGATION 1
cv File No. 6;-21;5_ _ 0§epor£ Made A D Date; D Period D
CLEVELAND - 9-2?-50 ' 6/7-9/18/so _Report E235 Ey "
JOHN B. O'DONOGHUE A0
D -~~Tit1e Character of Case
WILLIAM PERL, aka William Hutterperl nseionion - R
I
SYNOPSIS OF FACTS:
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92929292
PERL resigned from NACAeffective
5100 P.u.> 9/1/So. Left Cleveland
for New York on 9/B/SO and apparently
moved into his parents home, 936
Tiffany Street, Bronx, N.Y., on that _
date. Commenced_divorce action at Cleveland
against HENRIETTA BOYD BAVIDGE PERL, of
NYC, on 8/16/50. Accompanied MICRAEL
SIDOROVICH in July of 19h8 at which .
time SIDOROVICH purchased 19hl Stude-
baker Irm ROBERT E. PFLEGER, according
to PFLEGER and neighbor, who have furnish-
ed signed statements.
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.__ -_ ._ _r--_|-,..,-1, -; _ :3: .-'_.!'.§ .1 . -'.
Qgproyedi E_d _;;i QAC i D Do Notiwrité In Qheee Spaces
Copies '* _
Bureau 559312
Albany 5-1673!
Albuquerque 2
Baltimore
Boston
Mr 3-1° '92_
Chicago '
Cincinnati
Detroit
Knoxville 5-L88!
Los Angelea!. ,*.5l3[R'[57_ _ _
2 7 San Diego _
Philadelphia 5-h3Bh! _ ,,Pittsburgh 5-1386! I , /1 A ;st. Louie es-1521! _ /.-/ " I ='
San H-ancisco - _____'_j_ . .
Seattle ' - g;
Washington Field - j-Cleveland -CV 6%-2726! *
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65-2730 - -
0n August 18, 1950, WILLIAM 0. GIBBONS, Personnel Manager,
_ _National Advisory Committee for Aeronautics, advised the. '
writer that WILLIAM PERL had tendered his resignation from NASA to be
effective 5:00 P.H., September 1, 1950.9292 ,t 92 A
- On September 1, 1950, Captain JAMES W. GIBBS, Chief of_ -
Plant Protection, NACA, advised PERL*s affiliation with NACA had been
terminated as of 5:00 P.M., September l, 1950.
- _ _ 0n September 6, 1950, the subject advised he was leaving
Cleveland for New York pennanently on September B, 1950. The New York .
Division has advised PERL arrived in New Ycrk_City on September B, 1950,
and apparently moved into his parent's home at 936 Tiffany Street, Bronx,
New York, on that date. <~ - '
- _SA F. JOHN M. emrrm reviewed Docket #6172304» the -
Court of Common Pleas, Cuyahoga County, Ohio, which reflects WILLIAM PERL,
666 East l03rd Street, Cleveland, Ohio, has petitioned for a divorce against
HENRIETTA BOID SAVIDGEPERL, 19h East 38th Street, New York City, alleging
the defendant to be guilty of gross neglect and failing and refusing to .make a home for him for a long period of time. The eumons was issued on
August 16, 1950. . _.
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65-2730 .
65-2728 . . '
PURCHASE or 19h1 STUDEBAKER B!
¥1<=H+'-=1»SIwWI@H» ~W1»Y?9'*B ~
; _ The records of the Auto Title Bureau, West Third and
Lakeside, Cleveland, Ohio, reflect MICHAEL SIDOROVICH purchased a l9hl
Studebaker, Motor #166705, on July 21, 19b8, from92pne nosnnw E. PFLEGER.
During the course of an interview with ANNE SIDOROVICH
on August 21, 1950, for the purpose of securing typing specimens from the
SIDOROVICH typewriter, ANNE SIDOHOVICH advised Sis JOHN B. 0'DONOGHUE
and-DAVID A. WIBLE that she accompanied her husband when they bought their
present automobile and recalled a third person being with them. ANNE's
reply was directed to SA HIBLE but was also overheard by 5A 0'DONOGHUE,
who was.aecuring typing specimens. The automobile presently owned by ,
tho SIDOROVICHES bears Motor #166795, according to title records of the
State of Ohio. " -
ROBERT E. PFLEBER, an account executive of the Meldrum-A
Fewsmith Advertising Lgcncy of Cleveland, furnished the following signed
statement, which is being retained in the 1h file of 65-2730:
' ; '"Parma, Ohio .
_ - Lugust 2h, 1950
' "1, Robert E. Pfleger, make the following voluntary
statement to John B. OfDpnoghue,_££. and Anthony S. Fernandez, who have -
identified themselves to me as Special Agents of the Federal Bureau of
Inveatigation._ No threats or promises have been made to me to induce me
to make this statement. <.5
I 51 reside at S202 Albertly Avenue, Parma, Ohio, where i
have-resided for about four and one-halftyears.
. nburing the early part or July, 19hB I took e classified_§;'-
ad in the Cleveland Plain Dealer for the purpose of offering for sale e
l9Ul Studebaker Champion which I owned. The-ad appeared on a Sunday as ix
well es on one or two other days.' _ E
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- "On the Sunday when the ad appeared two men and one
woman came to my home for the purpose of examining the autmobile.' These -
three persons drove up in an automobile driven by the younger and taller
of the two men. My car_wes examined by the taller of the men and then
was taken out for a ride with the taller man driving. The three persons
left without any deal being closed. 9292 *
"The three persons returned the same afternoon within an
hour or two and the smaller of the two men whose name after_having my _
memory refreshed I recall as Michael Sidorovich stated he wished to -
purchase the automobile. The price agreed upon was 8750! seven hundred
and fifty dollars. Inasmuch as I needed the car for my use for about
two weeks we entered into an agreement whereby I would keep the car until;
a new one I had ordered was delivered to me. Sidorovich gave me a depesit_
~ *'at that time.
L. ,.
_ "Sometime later in July after my new car was delivered
I met Sidorovich at the Automobile Registration Bureau in downtown Cleveland
and closed the deal for my l9hi Studebaker. _ - '
- _ -"On gugust 22, I950 I'accompanied Hr. Fernandes to the
National Committee for Aeronautics Lewis_Flight Propulsion Laboratory!
where I saw an individual who was identified to me by Mr. Fernandez as
William Perl. This person.was the tall man who accompanied Michael
Sidorovich and the woman he introduced me to as his wife to m home in
July, 19MB to look at m 19h1 Studebaker and was the person who drove
my ear on s test run on that day.
" _ "I have read the ioregoing statement, contained on this
and one other page. To the best of my knowledge and belief it is accurate
and true. _ -
5_ /s/ Robert s. Pfleger
Witnessed:_ ' f
Johh?B. O'Donoghue, Special Agent, FBI, Cleveland, 0. B/2h/S0 _ ' §'
Jrnhen S. Fernandez, Special Agent, FBI, Cleveland, Qhio Aug. 2h, 1950" =. X_ _ - _
. - L -,.-»-' '
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65-2730 . A
6592728
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PFLECER recalled he had placed an ad in-both the *Cleveland
Press" and the "Cleveland Plain Dealer", metropolitan daily newspapers,
offering his automobile for sale. He recalled PLRL and SIDOHOVICH since
.he was of the impression at the time they visited him that PERL was the
prospective purchaser of his automobile inasmuch as he examined the PFLEGER
automobile rather closely and drove the car on a92tria1 run. When the
SIDOROVICHES and PERL returned after first leaving he recalls SIDCROVICB '
demanded a written contract and that ANNE SIDOROVICH Wrote out this contract.
No copy was furnished to PFLEBLR. _
It_nas recalled by PFLECER,whe1 he visited the National
Advisory Comittee for Aeronautics to view Fil-in person, that PERL had
intimated he was an aircraft mechanic or some such affiliated occupation.
--~ - on August 28, 1950, PFLECER observed uzcuasi SIDOROVlCH
as he entered 8706 Carnegie Avenue; Cleveland, and identified SIDOROVICH
as the purchaser of his l9hl Studebaker." "
Mrs. ROBERT E. PFLEGER has advised she recalled three
_ persons arriving at her home during July, 19h8 to examine her husband's -
' l9hl Studebaker. Shc_recalled that she remained in the rear of her home -
throughout the negotiations but did observe two men and one women. _Shc '
recalled that one of the men and the woman entered her home with hcr- .
husband through the roar door at which time she understood they executed
a contract and made the final negotiations for the sale of the automobile.
- _On August 28, 1950, Mrs. PFLEGER observed MICHAEL
SIDOROVICH and identified him as one of the two men and the womcn_who
entered her home with her husband at the time of the sale of her husband's
automobile. She was unable to identify WILLILH PERL. i
' Mr. E. L. KESTNER, Mrs.,PFLEGER's-father; advised he
was visiting the PFIEUERS on the day R._E. PFLEGER sold his automobile. A -
It is his recollection that the purchaser was accompanied by another man 5'
and a women, whom he did-not feel he would be able to identify. KESTNER '
was unable to.identify any photographs of SIDOROVICH and/or PERL. _
._ I ' '
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Mrs. E. A. XESTNER, KESTNERs wife, was unable to_
identify any of the persons end stated she did not recall the event
surrounding the sale. _
Mrs. MARIE APEL, Sllh Albertly Avenue, Panma, Ohio, a -'
next door neighbor of the PFLEGERS} advised she recollects Hr. PFLEGER
selling his automobile and recalls observing two men who drove up in an
old car on the day of the sale. She remembered the incident because she
asked her husband what was going on at the PFLEGER home and he advised her
PFLBGER had placed an ad in a newspaper in an effort to sell his automobile.
Hrs. APEL was unable to identify photographs but chose a photograph of
DAVID CREENGLASS as resembling the shorter of the two men. She did not
soe the woman but stated she only took a momentary glance at the two men -
and stated a woman may have been seated in the automobile that drove up.
4 - .
! EDWLRD J. APEL advised he did not recall the incident ;
.and did not recall anything about the prospective buyers of the automobile.
Mrs. man-3 BEIER, 5206 Albertlynvenue, Parma, onis,
advised she distinctly recalls seeing two men and a woman inspect the
PFLEGER automobile on_§ Sunday during July, 19bB. _She recalls_it was a >
Sunday since her husband was engaged in his hobby of umpiring local base-
ball games. Mrs. BEIER furnished the following signed statement, which
is being retained in the ll serial of 65-2730:
: ' "Cleveland, Ohio -
_ September_6, 1950 .
' b ' . "I, Marie Beier, makc_the following voluntary statement_ -
to Anthony S. Fernandez and John B. 0'Donoghue, who have identified _
themselves to me as Special Agents of the Federal Bureau of Investigation.
No threats or promises have been made totinduce me to make this statement.
I . _
A "I reside at 5206 Albertly Ave., Penna, 01110, which is -.-"
imediately adjacent to the residence of Robert E. Pfleger. I recall that
during July of 19b8, Mr. Pfleger offered his Studebaker coupe for sale
through an ad in a local newspaper. On a Sunday during July of l9hB_at
which time the ad was running I recall Hrs. Pfleger's parents were visiting
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65-2730
65-2728 .Q
"the Pflegers and I was seated in the driveway of my home watching my
daughter who was bicycling on the front sidewalk. Sometime during the
afternoon of this Sunday I observed an old auto park in front of the
Pfleger home. I later saw two men with Mr. Pfleger, one short and .-
one tall. At a later moment I observed the short man enter the Pfleger
back door accompanied by Mr. Pfleger and a dark haired, thin woman.
"I may have walked to the front of the house during the
time these people were present and I recall that at the time I felt the
taller man was the prospective purchaser since the short man remained
more or less in the background.
"Immediately after these
returned to his backyard and announced he
"On this date I observed
reception room of the Cleveland Office of
gation who is the tall man referred to in
told by SA John B. 0Donoghue this man ispeople left Mr. Pfleger
had sold the car.
a man passing through the
the Federal Bureau of Investi-
this statement. I have been
William Perl.
"I have read the foregoing statement and find it to be
true. 4
/s/ Mrs. Marie Beier
John B. O'Donoghue, Special Agent, FBI 9/6/50
Anthony S. Fernandez, Special Agent, FBI,9/6/50"
The following signed statement was furnished by MARIE
C. APEL and is being retained in the exhibit envelope of 65-2728:
I"September 19, 1950
' Parma, Ohio
"I, Marie C. Apel, do hereby make this voluntary state-
ment to James W. Anderton, who has identified himself to me as a Special
Agentfof the Federal Bureau of Investigation. No threats or promises
have been made me'to give this statement.
Ave, Parma, Ohio.
_ 7 _I reside at 5111. Albertly_ _ i __ __ _A ___ ___v_'..__.._.4..-_.-.,-._-..~._._--_i- ~-»1-. .._ ..._.... ..¢_..._._. .._...: 0-.. -_&J ,.___-__.. ._ __--
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"On a Sunday afternoon in July l9h8 exact date unknown
I happened to see a car drive up in front of Robert R. Pfleger's home,
my next door neighbor; I asked my husband if the Pfl§gers were having
a picnic and he told me that Mr. Pfleger was attempting to sell his
automobile and had advertised in the papers. A few minutes later I
noticed two mcn standing on my front lawn looking at Mr. Pfleger's
Studebaker coupe. One of the men was tall and dark haired and the
other was shorter and more of light brown colored hair. A short while
later I noticed the taller man in the car apparently examining the
dashboard. The shorter man was standing on the right side of the car,
with the door ajar, watching the taller man. Mr. Pfleger was standing
at the left frod.fender. '
"I didn't pay any further attention to the individuals
in Mr. Pfleger's yard. I know that the above two men came to see Mr.
Pfleger in an automobile.
"I have read the above statement consisting of two '
pages and to the best of my knowledge it is true.
- /s/ Marie c. Apel
Witnessed:
SA James W. Anderton 9-19-50 Parma, Ohio
"I certify that the above statement was voluntarily
given me at Panna, Ohio on 9-l9-SO by Marie C. Apel. -
Special Agent James W. Anderton "
The following signed statement was furnished by EDWARD
A. KESTNER and is being retained in the exhibit envelope of 65-2728:
- ' "Cleveland, Ohio
September 19, 1950
4
2 "I, Edward A. Kestner, do hereby make this statement
freely and voluntarily to James W. Anderton, who has identified himself
_ 5 _
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65-2728 ' '
"to me as a Special Agent of the Federal Bureau of Investigation. No
threats or premises were made to me and I understand that I do not have
tomeasummmm.
"I reside at DEDO South Hills Drive, and my daughter is
married to Mr. Robert Q. Pfleger.
"On a Sunday afternoon, either in the later part of July - .
or first of August l9h8,my wife and I about 2=3O P.M. drove in my son-in-
law's driveway and upon driving to the rear of the house noticed my son '
.in-law, Robert R. Pfleger talking with two men and a woman. These men
were purchasing'my son-in-law's Studebaker Club Coupe. One of these men
was quite a bit taller, about 3 inches taller, than the other one. I can
not remember exactly the description of the woman. As I got out of my
car the shorter man asked me if my car was for sale and I answered No,
you can't buy this car. My wife had by this time entered the yard and
I then entered the yard. About ten minutes later my son-in-law came in
and announced that the man had bought his automobile and had given him
a down payment.I
Q
"On September 19, 1950 Special Agent Anderton exhibited
several photographs tome and from the photographs shown, the ones of
Michael Sidorovich and William Perl closely resembled the individuals
in question.1
- 92
"I have read the above statement consisting of two pages
and find it to be correct to the best of my knowledge.
~ /s/ Edward A. Kestner
Witnessed: "
Special Agent James W. knderton u
l
"I certify that the abdve statement was rendered voluntarily
to me by Mr. E. A. Kestner on September.l9, 1950. _
g S.A. James W. Anderton "
_ 9 _
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65-2728 i - i ___
ROBERT E. PFLEGEH and MARIE BEIER, when first interviewed,
immediately selected a photograph of MICHAEL SIDOROVICH from a group of I
photographs as the purchaser of the PFLEGER auto. PFLEGER stated that
the photograph of PERL bore a resemblance to the man accompanying
SIDOROVICH at that time but was unable to definitely identify it, stating
SIDOROVICH's companion was thinner. Mrs. BEIER selected PERL's photograph-
from a group of photographs and stated she felt the person represented
was SIDOROVICH's companion. As is reflected in their signed statements,
set forth previously in this report, both identified PEEL when they saw
him in person.
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65-2728 -
PURCHASE or 19h1 STUDEBAKER BY
_W1LLIAM PERL, SEPTEMBER iahq
' The records of the Auto Title Bureau, West Third and
Lakeside, Cleveland, Ohio, reflect WILLIAM PERL purchased a l9h1 Stude-
baker four door sedan, Motor #199802, from EDWARD K. RHODES, Trumbull i
Court, Newton Falls, Ohio, on September 13, l9h8.
SA F. JOHN M. BEATTIE interviewed EDWARD K. RHODES, who
now resides at 1399 East llOth Street, Cleveland, Ohio, on hugust 2h,
1950.
RHODES advised PERL was accompanied by another individual
at the time he inspected RHODES automobile, who was not introduced to .
RHODES. He recalled this since he introduced PERL to his wife, EVELYN,
but since he did not have the name of the other individual he was unable
to introduce him to his wife. RHODES identified a photograph of WILLIRM
PERL as the individual who purchased his automobile but was unable to
identify a photograph of MICHAEL SIDOROVICH as the person who accompanied
PERL. A
RHODES recalled PERL stated he was employed by the
Pearl Linoleu Company of Cleveland and that when RHODES volunteered to E
leave a car jack at this company for PERL at a later date, PERL immediately
advised he would personally pick it up. He recalled that PERL bought his
automobile the same evening he came to inspect it and paid a purchase
price of $970.00 in cash. After PERL had left with the automobile and
within an hour PERL called RHODES and told him that the automobile had
broken down. RHODES went to the place of the breakdown and, to the best
of his recollection, believes this was between Euclid and Carnegie Avenues
on East l0Sth Street. PERL's companion was no longer in the car when
RHODES arrived. It is noted that MICHAED SIDOROVICH resides at 8706
Carnegie hvenue, which is approximately a five to ten minute walk from
East 105th Street. RHODES also recalled PERL stating he considered the <
Studebaker to be a good ear since he had previously owned one. .
_ 10 _l
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D
53
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65-2728 .
On August 25, 1950, RHODES observed MICHAEL SIDOROVICH
in person but could not effect an identification although he stated he
was certain he had seen SIDORDVICH some place before but could not state
he was the individual accompanying PERL at the time PERL purchased his
automobile although this could be possible. RHODES wife, EVELYN, also
viewed SIDOROVICH but was unable to identify him.
Mrs. LDTTIE E. WYLER, the owner of the home at 1257
Brockley Avenue, Lakewood, Ohio, where PERL roomed from August to approxi-
mately Christmas, 19h8, was interviewed by SL DAVID A. WIBLE on August 26,
1950. Mrs.'WYLER advised that PERL may have come to her home to live as "
early as a week after July h, 19b5, and she recalled that for a considerable
length of time after his arrival he drove an old coupe, the make of which
she did not know but which possibly could have been a Plymouth. This auto .
had a faded appearance and might have been a faded blue although she was
not certain of this fact. She definitely recalled that PERL took this
car back to New York possibly around Labor Day of l9h8 and upon his return
purchased a pre-war four door Studebaker. She recalled he saw an ad in
a local newspaper which she believes is the auto he ultimately purchased.
On September 12, 1950, RHODES was introduced to MILTON
KLEIN, fellow employee of PERL at NACA, and RHODES, after conversing with
KLEIN, stated he was convinced KLEIN was the person who accompanied PERL -
at the time PERL bought RHODES auto. He advised KLEIN recalled incidents 92
which he, RHODES, had forgotten but now remembered. _
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65-2228____a e- - O- __ I. _.. ._. ._...__ -.- Hi. _ ic_.__ _ __ .
MILTON KLEIN was interviewed on September 12, 1950,
by SAs JOHN P. 0'DONOGHUE and DAVID L. WIBLE. KLEIN advised that he
had been employed by NACA since l9h2 and has known WILLIAM PERL since
they attended Dewitt Clinton High School, New York City, together in the
early thirties. KLEIN denied any knowledge of espionage activity on the
part of PERL or himself and stated he had never been affiliated with
the Communist Party or any similar organization. KLEIN identified photo-
graphs of MAX ELITCHER, MORTON SOBELL, STANLEY RICH, WILLIAM DANZIGER,
and JOEL BARR, all of whom were classmates of both he and WILLIAM PERL
at the College of the City of New York. KLEIN stated that all studied
electrical engineering and since he majored in chemical engineering he
was not as well acquainted with them as WILLIAM PERL. He further advised
that his association with these people was very slight and he did not
believe PERL to be particularly close to any of them. However, he believed
DANZIGER was best known to he and PERL since DANZIGER resided in the same .
neighborhood in the Bronx. . -
KLEIN furnished the following signed statements
the purchase of a l9bl Studebaker by WILLIAM PERL from EDWARD K.
during September of 19b8, which statements are being retained in
envelop of 65-2730i Jconcerning
RHODES
the exhibit
"September i2, 1950
Cleveland, Ohio
' "I, Milton Klein, do make the following voluntary state-
ment to John B. 0'Donoghue and David A. Wible, who have identified them-
selves to me as Special Agents of the Federal Bureau of Investigation.
I have been advised I need make no statement, that I have the right to
the advice of counsel and that any statement I make may be used against
me.
"I recall that during the early fall of 19b8, William
Perl, an associate at the National Advisory Committee for Aeronautics
and who I had known since my youth, mentioned he was in the market for a
used automobile. On one occasion I accompanied him when he went to inspect --
a Studebaker Nineteen forty-one model! at an east side Cleveland address.
hfter inspecting this automobile I recall Perl purchased it and we drove
- 12 -_
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65-2730 1 -'0
"off in the Studebaker together. Approximately ten or fifteen minutes
after, the Studebaker broke down. Perl attempted to fix the Studebaker
but was unable to do so. He then called the person from whom he pur-
chased the Studebaker and shortly after that individual came to the
place where the auto had broken down and offered assistance.
"Last night I accompanied Special Agents F. John M.
Beattie and David L. Wible to a home on East 110th St., Cleveland and
A observed a man who is the person who sold Perl the Studebaker. _Hc
was introduced to me as Edward Rhodes and I then recalled this to be
the name of the seller of the aforementioned Studebaker.1
"I have read the foregoing statement, consisting of .
this and one other page, and to the best of my recollection, is true
and accurate.
' - /s/ Milton M. Klein
John B. 0'Donoghue, Special Agent, FBI, Cleveland, 0., 9/12/S0
David A. Hible, Special Agent,FB1, Cleveland, 0, 9/12/50"
4 * *'* * * * * e
."September 12, 1950 _
Cleveland, Ohio
"I, Milton Klein, do nake_the following voluntary
statement to John B. O'Donoghue and David A. Wible, who have identified
themselves to me as Special Agents of the Federal Bureau of Investigation.
I have been advised I need make no statement, that I have the right to
the advise of counsel and that any statement I make may be used against
me.
1 I
' "I do not know Michael $idorovich nor am I able to
recognize a photo of him, as furnished to me by Special Agent O'Donoghue.
I do not recosnize the nae Robert E. Pfleger and I have never entered
into any dealings, social or business with either Sidorovich or Pfleger.
I never, to my recollection, looked at or sought to buy, either myself
-13 _
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CV. F. O.
65-2730
65-2728 ' >
"or in the company of anyone else, an automobile in Parma, Ohio.
"I have read the foregoing statement, and to the best
of my recollection, it is true and accurate. ' '
/s/ Milton M. Klein
John B. O'Donoghue, Special Agent, FBI
David A. Wible, Special Agent, F.B.I. "
Mrs. RICHARD J. JENKINS, 656 East lO3rd Street, Cleveland, .
advised SA VINCBNI H. NAPOLI that an uunnsihe premises at this address
and rented an upstairs apartment to one SIDNEY M. HLRMDN, an employee of .
NACA, who in turn sublet the apartment to WILLIAM PERL. During this
period, the Summer of 1950, HARMONmas studying at the University of
Michigan, Ann Arbor, Michigan. Mrs. JENKINS knew of no unusual activities
on the part of PERL, but identified a photograph of MICHAEL SIDOROVICH as
a man who came to her home and asked for PERL sometime during the middle
of July. She recalled that this person wore a straw hat, glasses, and
a light brown suit. After directing him to PERL's apartment she did not
see him again.
On August 16, 1950, SA WIBLE accompanied Mrs. JENKINS .
to the neighborhood of 8706 Carnegie Avenue, where Mrs. JENKINS viewed
MICHAEL SIDOROVICH from a vantage point as he returned home from work
at approximately 6:30 P.M. Mrs. JENKINS stated that she was able.to
get a very good look at SIDOROVICH and she felt he looked enough like
the individual who had inquired for PERL to be that person's twin brother.
However, she stated she would not be able to testify under oath that
SIDOROVICH was identical with the unknowp called since she was not certain.
1
Physical surveillance to date has failed to reflect
SIDOROVICH has ever worn clothes such as described above and has never
been seen to wear a suit coat.
34
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65-2730
, ______ -- '~-'- "
ROBERT RESNICK ..{--__._~____.___- -
During the course of previous interviews PERL has
advised he was acquainted with ROBERT RESNICK during the period of
RESNICK's employment at NACA. ' .
- WILLIAM G. GIBBONS, Director of Personnel, Lewis Flight
Propulsion Aehoratory, NACA, has advised PERL was closely associatedwith and was s immediate superior until
resigned in June, 19h6. 7
Personnel records of NACA reflectwas employed
by that organization from April B, 19hU, through June 2 , 19b6, at which
time he resigned. '
Confidential Informant T-1, of known reliability, ad-
vised on September 25, 191414, that ROBERT RESNICK was a member of the
Ward 19 Club of the-Communist Political Association, Cleveland, Ohio."
T-1 and T-2, of known reliability, have advised that throughout the
remainder of 191m and through March; 19b5, azsmcx was know.-m to them _
to attend CPA meetings.
__p ,,_ Coniidential Informant T-3, of known reliability, -
advised "' =. ivestigated under he Hatch Act and "cleared" by
£1». , . _ 4' - ,.-"-f':;"_'; ., Lewis Flirht Propulsion
Laoratory, ,"1n care "A .
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:7-gpfinised-ith exams atjschool and nould;therea£ter be able to'take'a *
Zamora activgpartQinéth§;§§gtign;sQaf§airs. 'The informant~advisedthaiV o2f :rT§§%"'IE; l_J9_lij;,_-_;_}3.ESI'Jlfdiahad-:aqué.s:t_ed_};in1j§?;ICE smvss-am to take o'ves_-:_
tfgiiiéaidsmeeinceehewwould~be;busy with exgmgqggr1twQ"wee3s._iCn'.§§£$%e29;#i9%f@the $$ormant*edvdsed~thatfpersdns Edeavoring ?5§¥ocav¬*'' he '1 erwhero 9 etin W"uld b *3xF = Q Q Y ._E.§.E 1 -- ..:..;_,;.@@ is .°L ._ ...,;¢»a,,ga,= we We ~-ieai~1".as=.te¢ =-"%a11;sos"_'gssF'ifr;1< am-"a'; est 5&8 : LL_ ea@s.~=m.=.e.a»s?_;1nI,. 574 ~
T-S also stated thatlon September 2b, 19147, MAURICE
ERAVERMAN and BOB RESNICK were attempting to get new members to attend
the CP meeting on September 25, l9b?. '
It is noted that at the time RESNICK resigned from
NACA he accepted a position as instructor at Johns Hopkins University -
at Baltimore, Maryland. In August, 19b9, RESNICK accepted a position
as Associate Professor in the Physics Department at the University of
Pittsburgh. There has been no indication of Communist activity on the
part of RESNICK since his arrival in Pittsburgh.
- ' t HERMAN T. EPSTEIN
WILLIAM PERL has advised he was closely associated
with EPSTEIN during the period both were employed at NACA, Cleveland,
Ohio, from January, 19bh, until the Fall of 19b6.
On September 11, 1950, HERMAN 'r. EPSTEIN, Associate p
Professor of Physics, University of Pittsburgh, was interviewed concerning
his connections with PERL. EPSFEIN advised that he first met PERL in
January, l9hb, when he, EPSTEIN, accepted a position at NACA, Cleveland,
Ohio. EPSTEIN stated that he was employed in the Theoretical Section,
Wind Tunnel Division, and that PERL was his immediate supervisor. _EPSTEIN
informed that he worked with PERL for approxnatcly three years until the
fall of 19b6, when he, EPSTEIN, resignedihis position and went to the _
University of Michigan to study for his doctor's degree. EPSTEIN advised
that he and PERL have kept in correspondence and personal contact since
that time and that he, EPSTEIN, considers himself to be one of PERL's
closest friends. . _ -
, .
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65-2730
In connection with this statement, EPSTEIN advised that
PERL had very few outside contacts, kept very much to himself and was
very conscientious in his work. EPSTEIN recalled being in personal
contact with PERL in June, 1950, when EPSTEIN attended a five-day con-
on biophysics at Oberlin University. He also recalled seeing
in Cleveland during May, 1950. EPSTEIN stated that he had also
contact with PERL on other occasions which he could not speci-
_ recall at this time. By way of explanation, EPSTEIN stated
that during the past 1% years he, PERL, and one, Dr. WILLIAM JORDAN,
presently at the University of Washington, Seattle, Washington, have
been working together on a problem in biophysics, and that consequently,
whenever possible, they have managed to get together to discuss the
problem. -
It is noted that EPSTEIN stated that he only met
JORDAN on one occasion in Cleveland; that JORDAN was an acquaintance
of the subject, and that he believed JORDAN is e medical doctor.
At the beginning of the interview EPSTEIN stated that
in June, l95O, the subject told him that he was considering accepting
a position at Columbia "niversitv in New York City, and that he also
had under consideration several other iobs including a Government
po'ition of some type. EPSTEIN further stated that the subject had also
indicated a contemplated trip to Seattle in order to work with JORDAN.
EPSTEIN stated that he has not as yet heard from PERL concerning his,
PERL's, present activities but that he expects a letter from him in the
very near future EPSTEIN expressed the opinion during the interview
that the present inquirv of the FBI had to do with a position which
PERL 1S seeking and nothing was done to change EPSTEIN's opinion.
. On Septembe;,l2,_lQ§O, subsequent t9_theipteryiew ofFPSTEIN, one ggl.-' RICKIQTTS, Ir}_ter_na.'l Hnve92ie"'1'Cg§nt'}3_OfIi'cco6i .In'ter'1'?,§1I]
Pi%¬?¬%d%§?i§Ef?%Z?15?"Za?i§¬ SA EDWARD 3. wicnnotz that he, g;cx£ri%§resid gw n the~third§£loor of a residence at 210 South St. Clair Street.¬§;§%§E§§adviscd that HERMAN T. EPSTEIN, a biophysicist at the Qniversito ittsburgh, resides on the second floor of this residence. I
stated that he and his wife have noticed that EPSTEIN has been receivingCommunist literature, including the "Daily Worker". E§lCK§TTq further
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and out of the EPSTEIN apartment, and hat she recalls at one time
that EPSTEIN, in company with visitors; was operatig_ either a recordingmachine or some sort of a shortwave radio set. §jx@£FIQ also informed
that the occupants of a next-door apartment, DONALD and ELEANOR MAIETTA,had until recently been fairly close friends of the EPSTEINS. £¥1CKETTS{
stated that at the present time they did not seem to be particu EfIy"'friendly and that during the evening offggqember-11% 1950, MAIETTL madethe statunrent to EICKETT5-that EPSTEIN §5=%i§ lér -winger in the- Pittsburvh distric . k;1ci
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LABORATORY REPORTS -
WILLIAM PERL has advised that when he was contacted by
VIVIAH GLASSNAH on July 23, 1950, she wrote out her message to him on a
pad of ruled paper. On July 26, 1950, PERL furnished the remains of that
pad consisting of four sheets of ruled paper and one sheet of ruled paper
containing handprinting and handwriting in pencil consisting of a note to
his maid, EnTIIE BROOKS. The Laboratory by report dated August 1, 1950,
advised that no indented messages could be found on these specimens.
' The FEI Laboratory by report dated August 17, 1950, ad-
vised that the_fo1lowing money order applications, all bearing the name
of the signer as W. PERL, were executed by WILLIAM-PERL:
#162213 dated January 20, 19h?
#S7h7h dated July 25, 19h?
#195061 dated September 23, 19h?
J #199603 dated October 28, 19h?
#21lB1h dated January 22, 19hB
#9l357h dated November 2h, 19hB
By report dated August 31, 1950, the FBI Laboratory
advised that money orders #50990 dated August 30, 19b8, #52296 dated
September 23, 19b8, and #Sb22? dated October 22, 19b8, were executed by
WILLIAM PERL. All of the above money orders were made payable to A.
SARANT, Ithaca, New York.
1_ __ ._._-ii _ __ ___ __, - .¢ >- -.' 7 L . , » , Hr
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The Laboratory by report dated September S, 1950, ad-
vised that the typewriting on the letter dated August 9, 1950, directed
to Er. N. WALTER at Mexico D.F., was compared with various typing specimens
secured from PERL'e apartment during an authorized search.
By report dated September 6, 1950, the Laboratory
advised that a photograph of three sets of typewritten statement by _
WILLIAM PERL dated July 28, 1950, was compared with the letter directed
to Mr. N. WALTER, Mexico D.F., referred to above, without effecting an
identification. Y
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65-2730 i
e_ e ~~~semmmmnwwm¢mer~~~~*»+-*
_ Confidential Informant,T-1, of known roliahilit', advised -that subject has been in contact with the following persons and/gr
organizations:
. Walter J. Johnson, Inc.
125 East 23rd Street _
New York 10, New York I
U. 5. Department of hgriculture
Washington 25, D. C.
Melard Manufacturihg Company I
3?-25 32nd Street
Long Island City 1, New York
Planters Nut and Chocolate Company
632 South Main Street
Wilkes-Barre, Pennsylvania
H.R.Mawh _
University of Washington
Seattle S, Washington
Sidney H. Harnon_ 92
Box 226, Greene House
Ann Lrbor, Michigan
Institute of Electrical Engineers
Savoy Place, Victors Embankment
London W.C. 2
Sadie Mutterberl
936 Tiffany Street
. Bronx, New York 2 A.
g It is noted SADIE MUTTERPERL addressed her letters to the?
subject as late as August 7, 1950, to 16802 Larchwood Avenue, Cleveland,
although he had been-residing at 666 East lO3rd Street, Cleveland; since
the latter part of June.
_ 31 -
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65-2730
§§3souNBL RECORDS 3 NACA l
_The following material was copied from documetscontained in FERL's personnel file at NACA.
I -1
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65-2730 K
JBOaDG4 _ '
> "10/16/39."
"Memo. for Administrative Officer Y
"Subject: Transfer to Physical Research Division.
"For approximately six months I have been assigned to the '
Maintenance Section. While I have no complaint to make con-
cerning my treatment in the Maintenance Section, I do not feel
~ that I am of as much value to_the Committee in this section as2?!" I could be elsewhere for the following reasons: .
"a! The duties I em assigned to at present, being
.A necessarily of a practical nature, do not interest me as much
L ~ as I believe research work would. .
92
"h! M interests are in the direction of mathematics
and physics.I
"In view of the foregoing I beg you consider transferring
me to the Physical Research Division."
"Respectfully Submitted, _
/s/ "WILLIAM MUTTERPEHL"
"App WHC .
10/16/39"
t
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65-2730
JBOiDG
, .
'. "MAR 29 19hl"
"Sir:
_"Mr. William Mutterperl,
DAH
I"Pursuant to action of the Committee on Personnel,
Buildings, and Equipment, you are hereby rerated from JuniorElectrical Engineer, Grade P-1, with pay at the rate of $2200
per annum, and appointed Assistant Electrical Engineer, GradeP-2, with pay at the rate of $2600 per annum, effective April
1, l9Bl.
"Respectfully,
"NATIONAL ADVISORY COMMITTEE
FOR AERONAUTICS,
"J. F.Victory
Secretary.
Langley Memorial Aeronautical Laboratory;
Langley Field, Hampton, Virginia.
Through official channels.!
con '10 LMAL A
CEPTIFICATE no P-11h71, smnn, 3-19-hi"
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65-2730
JBO:D3
_ _ "Langley Field, Va.
. April 8, 19h3
"MEMORANDUM For Chief Aerodynamics Division.
"Subjecta Recommendation for the promotion of
Mr; WILLIAM MUTTERPERLQ
"1. It is recommended that Mr. WILLIAM MUTTERPERL
.be promoted from his present pay status of Associate Electri-
cal Engineer P-3! at $3200 per annum to Aeronautical Engineer
P-h! at $3800 per annum. -
"2. Mr. MUTTERPERL has demonstrated exceptional ability
in theoretical research and in his ability to grasp, understand
and develop difficult and abstruse problems. His recent work
on the theory and design of axial-flow fans represents an out-
standing bit of research and is a substantial contribution in
this field. His theoretical studies of sweepback, airfoils in
cascade, and development of new methods for the calculation of
pressure distribution on airfoils are examples of the type of
analytical studies which he is capable of handling. Mr. MUTTER
PERL has a brilliant mind and has shown a continuous improvemen
during the several years he has been at the full-scale tunnel-
I firmly believe that he will make even more substantial con-
tributions in the field of aerodynamics and feel that he should
be encouraged in every way possible. 3
t.¢
'0
I
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' 4'
*/s/ ABE SILVERSTEIN _
Abe Silverstein, '
Principal Aeronautical Engineer;
is.r1w - - A awn b/1b" '
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65-2730 M
JBO:[p
90122-i mumnrent, mum!
"Memorandum to Mr. H. J. E. REID.
"Subject: Absence from the Laboratory on May 31 and June 1, l9h3"
"I was away from the field on May 31, and June 1. Be- -
cause the necessity for my departure became apparent very shortly
before I left, and because I did not realize that Monday was a
holiday, formal permission to leave was not requested. It is
believed that no great delay in my work occurred because of my
absence."
' /s/ "WILLIAM MUTTERPERL" - '
"OIKI H.0.W. JUTIE S,
'"Rec, Approval
EHJ for BUM
JApproved: A J
- mm 6/10/L3"
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"Langley Field, Va., -
' _ ' I November lB, l9h3.
"**"" Whi*Abe'SiIversteinj** "__** " __"" _"" "_ "_ '4
National Advisory Committee for Aeronautics,
Cleveland, Ohio.
"Dear Abe:
"In regard to MUTTERPERL'S transfer, I talked the matter ,
over with MUTTERPERL and DEARBOHN and it looks as though it will
be possible to transfer.him to Cleveland about December 1 as we
previously agreed. MUTTERPERL is getting his affairs arranged
- -with this in view. ' '
"As regards MUTTERPERL'S papers, the situation has not
changed appreciably as yet. As we agreed, I have JONES and
von DOENHOFF looking these papers over with a view to com-
menting particularly on their usefulness and I have hopes that
we will be able, with perhaps certain revisions in the presenta-
tion, to get them published. I don't thihk that we can clean
them up before the first of December, and after talking to
.MUTTEHPERL and DEARBORN I believe that with KATZOFF'S assistance
we can handle the situation at least until actual revision is
required, at which time of course we could send KATZOFF'S
suggestions to MHTTERPERL for final changes. with the date so
uncertain as regards the final disposition of these papers, I
think it best that MUTTERPERL go to Cleveland about December 1.I
I
1
92
"I will take steps here to clear MUTTERPERL for this trans-
fer but I suggest that you, as a matter of record at least, start
through a request from Cleveland for his transfer there.
"We are having a lot of grief with the fan on the PBM-3
and I may want to get you down for a couple of days to help
us thrash the solution out. So keep your work organized so you
can get away for a couple of days oh short notice." -
"Yours.very truly,1i /s/ "J. w. cnowtsr
, John W. Crowley, Jr. -
-2?-
"..-"."_.- -. -.__.__... -. .- i V 7 77 7 > _ , _______.__. i___,,,______.____~-__..._.. -_. ...- .-¢-._-_._... 4- -___ §..>_ __ 92-' ~~ _ I
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_ "Cleveland, Ohio . '
November 20, 19h}.
______-~;~NMr;~sESsIQNS-: -" " * * _ ""___1_"4t A44u74777d__
"MEMURANDUM: Mr. KEMPER,
Executive Engineer. C.K§
- "It is requested that necessary paper work be initiated
- for an official transfer of Mr. WILLIAM MUTTERPERL from the
L.M.A.L. to the A.E.R-L. on or about December 1, 19b3, This
date has been checked with Mr. CROWLEY of L-M.A.L., and is
satisfactory as indicated on the attached letter." ,
G
/s/ uABEu '
"Abe Silverstein,
Chief of Engine Installations Division."
"acs 11/23 -
"Gov't expense"
92 I
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s.
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r"Cleveland, Ohio,
_ November 25, l9h3."
"FromKERL" "4"" ' '_' ll ~*"_' '*T_rT'_"**'_' _ "
"To LMAL ,
"Subject: Transfer of Mr. MUTTERPERL to AERL.
"1. It is understood that tentative unofficial preparations
have been made between Mr. CROWLEY of LMAL and Mr. ABE SILVERSTEIN
of AERL for the transfer of Mr. MUTTEHPERL from LMAL to AER1,
effective on or about December 1, 1953. It is assumed that it is
entirely agreeable to your laboratory to have this transfer .
consummated. Inasmuch as the transfer will be in the interest
of the Government, it is our intention to recommend that the
transfer be made at Government expense and we will therefore
need the following information regarding Mr. MUTTERPERL.
Mode of
c! Whether
effects
d! Whether0 a!
b!Grade and salary
transportation desired
or not household_goods or personal
are to be shipped A
or not Mr. MUTTERPERL has dependents
. living with him.
"2. Your'prompt attention in reply to this letter will
be appreciated as the proposed transfer date of December l'is
fast approaching."
"ECB:mhh/s/ "EDWARD R. snine
Edward R. Sharp,
Manager."
"Copy to Washington Office l
5_ "RETURN TD AERL
PERSONNEL FILES"
"Nov. 25 19h3"
~ 1 o ~ o
¬cv. F. o. ,
es-2730
JBO:QGE .1, .
"FILE COPY PERSONNEL OFFICE
TAG-1S0 December h 19h}
"Sir:
"Pursuant to authorization of the Chairman, you are here- '
by transferred from Aeronautical Engineer P-h, with pay at the
rate of $3800 per annum, Langley Memorial Aeronautical Laboratory,
Langley Field, Hampton, Virginia, and appointed Aeronautical
Engineer, at the same grade and pay, Aircraft Engine Research
Laboratory, Grayton and Brookpark Roads, Cleveland, Ohio, effectire
from the date of your entrance on duty.
"This transfer is required in the interest of the Govern-
ment and is not for your convenience.
"You are hereby authorized to proceed to Cleveland, Ohio,
at the earliest possible date, via privately-owned automobile, and
for necessary direct automobile travel you will be allowed h
cents per mile. It has been determined that travel by automobile
is more economical and advantageous to the Government.
"While traveling under this authority you will be allowed
traveling expenses in accordance with the Standardized Government
Travel Regulations, including $6.00 per diem in lieu of sub-
sistence. The excess time required for travel by automobile over
that required for travel by train will be charged to your leave
account and subsistence will not be allowed for such time.
"You are authorized to have your household and personal
effects shipped at Government expense in accordance with the
provisions oi the attached Executive Order No. B588 of November
1, 19b0, as amended, applicable to persons having no dependents
living with them. Shipment shall begin within the six-month
period following the effective date of this transfer, unless an
extension is requested and approved within that period. The
provisions of the Executive Order will be strictly observed."
1' "Respectfully,
!"Mr. WILLIAM MUTTERPERL .
Qeronautical Engineer P-D NATIONAL ADVISORY COMMITTEE
Langley Memorial Aeronautical FOR AEROHAUTICS
Laboratory
Langley Field, Virginia E. H. CHAMBERLIN
Through official channels.! Acting Secretary"
Enclosure _ 30 _ _
MEX
. '_ _¬_,_,__- _,.- _,_._ _..¢. v. Q.----q-0-n . -ye - - _._._ .--- .-__,_ii<|r@- . 7 _____ _!.,__ _ -T
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65-2130 4
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§ I
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WUQZS M NEWYORK NY JUN ll B5733
ABE SILVERSTEIN, NACA AIRCRAFT ENGINE RESEARCH LABORATORY
CLEVELAND AIRPORT ' _
smymc our ABQJT A WEEK EMERGENCY v:1m~: cm:
wssrrzn umon ammo cnwmu, IF mamas "
w MUTTERPERL
359A June 12.
RQ1?25JRTU '
COPY FOR ,
Leave Office
.1 ' "
92.
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A PERL!
"201 MUTTERPERL, WM"0
"Cleveland, Ohio,
November 9, 19hh.
"MEMORANDUM For Manager-
"Subject: Overdrawn leave-
"l. I have taken a total of 28 days leave this year-
My leave is therefore B days in excess of the maximum time
granted-
"2. The overdrawal of leave was made necessary by m
marriage and the ensuing_difficulty of locating a suitable place
to live» A
"3| It is requested that the excess leave be granted
as annual leave."
/s/ "WILLIAM MUTTERPERLI
William Mutterperl, ~
Aeronautical Engineer-"
"92h'M:hmg
AS
"Approved:
ABE/ealI
'"A. c. DRAIG '
For the Manager"
7 "RETURN TO AERL
5 PERSONNEL FILES"
..32_O
aii - 4- - 4 - _ r _ .1_:;j_ ___;____ ___- ____ ______,-..- - --= @_. ._-_.p_,4p ._'_-~¢_%-i.-n-__Q4- 5- 1. -._-.4-._-i? ___ ;m.-- ql3l92-Q3. ii.-_-1-,, concn ll-l4-0
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"PERL, wxttma
___ "______ _ __i._._ i"_.ii_-a_ _.--.NACA-Cleyeland- ~ -~ ~~ *a a "
I "Cleveland, Ohio,
_ February 23, l9b5
"MMORANDUM For the Manager.
"Subject: Recommendation for promotion of Mr. WILLIAM PERL,
Analytical Section, Engine Installation Research
Div ision. _
- "l. It is recommended that Hr. WILLIAM PERL be promoted
from Aeronautical Engineer, grade P-h, at the rate of $3800 per
annum, to Aeronautical Engineer, grade P-SQ at the rate of
$h6O0 per annum.
"2. Mr. PERL entered duty with the Committee on April
8, 1939, as a Junior Electrical Engineer, grade P-l, at the Lang
ley Field Laboratory. While.at Langley Field he was attached
to the Analytical group of the FullScale Wind Tunnel, under my
supervision. On December 23, l9U3, he was transferred to the
Cleveland laboratory to take charge of the Analytical Section
of the Engine Installation Research Division.
"3. Mr. PERL'5 work has been odtstanding during the
entire period of his employment. His knowledge and skill in
the field of theoretical and applied aerodynamics rank him
as one of the leading men in the field, and he has written '
papers which may prove to be classics in the field of potential
flow. His poblications include the following:
1| a!Calculation of Span Load_Distributions on
Swept Back Wings,Y December, l9hl - T.N. 83h, by
WILLIAM MUTTERPERL since abbreviated to
WILLIAM PERL!.
_ " b! A'The Conformal Transformation of an Airfoil
into a Single Straight Line, and its Applica-c i _tion to the Inverse Problem of Airfoil Theorygl
3 December, 19hh - ARR No. Lbxzea, by WILLIAM
' MUTTERPERLO
' -33-
__-_._ _.-- !__. _. - _7___ __..» - .--- _
920 igi_, ,_ .. _ _,_ ______ _,-_ 7 »!.__~_- _..__ -.. ~ -- --4--- i~ -'~-" " "r
cv. E. 0. '
65-2730
JBOaDG
n c!
" d!
" e!
" fl
" g!
n h!High Altitude Cooling - Part VI-- Axial-Flow Fans .
and Cooling Power, September,92l9hh - ARR No. lbllle,
by WILLIAM MUTTERPERL¢ .
'A Solution of the Direct and Inverse Potential Prob-
lems
19th
The
on a
797,for Arbitrary Cascades of Airfoils,* December,
- ARR Lhx22b, by WILLIAM uurrsarsnt.
EndPlate Effect of a Horizontal Tail Surface
Vertical-Tail Surface, February, l9bl T.N.
by WILLIAM MUTTERPERL and Mr. KATZOFF1
A Two-Dimensional Incompressible Potential Flow of
Corrugated and Distorted Infinite Surfaces, January,
19hS- ARR ESAOS, by WILLIAM PERL and L. J. cease»
'Some Effects of Compressibility of the Flow through
Fansand Turbines, December, 19th, by WILLIAM PERL
and H. EPSTEIN,
'A General Representation for Axial Flow Fans and
Turbines, January, 19b5, by Mr. PERL and Mr. TUCKER.
~-n.Mr. PERL is at present in charge of about l2 men,
who are engaged in theoretical and applied research relating
to problems of jet propulsion, missile design, and supersonic
wind tunnel desigh. He has shown ability in developing the men
who are working for him, so that they produce a high quality
of research. His group is at present working on the difficult
problems relating to the determination of theoretical _
pressure distributions on airfoils in cascades, and are obtain-
ing excellent results. He has also developed a method of
applying the relaxation method tc the calculation of the flow
over airfoils in cascades and in channels at high velocity;
."5-Because of his excellent record, and outstanding_
-brilliance in the field of theoretical_and applied aerodynamics,
because of his continued excellent bork in the associated
fields of jet propulsion and missile development, and because
of his superior ability in directing the work of his juniors,
it is believed that Mr. PERL is entitled to promotion to the
position ofkeronautical Engineer, grade P-S»
Approved for change in grade from Ph to P-S."
/s/ "c. KEMPER 2/2h/us
/s/ PABE srxvshsrzzm-'
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CV.,F. O.65-2730
JBO:DG
"65 Morton St.
' New York lb, N.Y.
. Feb. 12 19h7.Z__.___- - ._i__ < . _ ee..__?e . eee____-.-e____..- .!_---_ __e~__
"Addison M. Rothrock
Chief of Research _
Aircraft Engine Research Laboratory
NAGA
D831 MI.
- "I should like to request a year's extension of my leave.
of absence which ends about Feb. 16, 19h?. The main reason for
this request is that I stand a fair chance of doing a thesis under
von KARMAN here at Columbia University,
Q "I realize and quite regret the fact that I am more or
J less breaking my word of a year ago of returning to the organiza-
tion at this time. Perhaps my_present unforeseen! opportunity
of studying under von KARMAN will be considered a reasonable
extenuating circumstance. '
. "I deeply hope that you will be favorably disposed toward
my desire to maintain this interim connection wiui NACA."
"Sincerely yours,
/s/ "BILL PERL"
"LWOP approved for
1 week ending 2-23-h?
by TOUSIGNONT 2-18-h?
ELF
"L.W.0.P. for period
requested by Mr. PERL approved.
/s/ "ABE sxtvnasiein/Q1?"
"approved
Q /s/ J. D. 1OUSIGNANT"'
- 35 _I
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JBOIDG
»"m=._sv11_iim_peri,______-___ ma A.__ a__ a_ - - _. a_ -* i _ _
65 Morton Street,
New York lb, N. Y.
"Dear Mr. Perl:
"This is to advise that yorr leave without pay period
has been extended to June 15, 19hB in order that you may complete"Marsh 10, 19b6,
your present semester's work at Columbia University.
"lt is requested that you immediately report to the
PERSONNEL OFFICER upon your return to dutya"
-"RWS:jmc
co A. SILVERSTEIN
Pers. Records
Pers. Actions"
Fiscal _
Empl. Relations
Files
41
>"Yours very truly,
ROBERT W. SCHMIDT
Robert W. Schmidt,
Acting Asst. Personnel Officer."
I
1
-36..RETURN ID AERL
PERSONNEL FILES"
1 i' 0
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65-2730
-'
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"March S, 19b8,
"Mr. William Perl,
65 MortonStreet;~A~-----~~<~ ~e~-- - '»~ - _ __ ._ _ _
New York 1h, New York.
"Dear Sir:
"The Investigation of Employees under the Presidentls
Loyalty Program under Executive Order 9335 dated March 21,
19h? requests that each employee submit Standard Form Sh
Request for Report on Loyalty Data and Standard Form 86
Fingerprint Chart'. This program must be completed by
March 10, l9h8. It is therefore requested that you complete
the attached forms and return to this office immediately-
- "Your Fingerprint Chart may be taken to the Local Board
of Civil Service Examiners Local Post Office! or the Police
Station located in New York, New York. __ ,
"A self-addressed envelope is enclosed herewith for your
convenience."
. "Yours very truly,
2 /S/ HEM
Emilie Mateyka,Chief, Employment and
Examining Section."
"Enols.
mb"
_ 37 _
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. _ "April 13, 19b8
Mr. WILLIAM PERL,
65 Morton Street,
New York lh, New York.
Dear Mr. PERL:
"The_lnboratory has been following your work at Columbia
University with interest and has been very gratified with your
progress. "
"I am pleased to inform you that Mr. SILVERSTEIN has rec-
ommended you for promotion to the position of Aeronautical Hesoarch
Scientist, P6, $7102.20 per annum, and that this prmnotion has
received neccssery NACA approvals. -
"Payroll regulations prohibit the promotion of an employee
in a leave without pay status and, therefore, your promotion will
not be effective until you report to duty status.
"I am bringing these matters to your attention so you will
know that the NACA has completed all action on its part necessary
to give you a P-6 rating. l
"We will appreciate hearing frmn
report to duty status. In the event
gnrding this matter, do not hesitateyou as to when you will
you have any questions re-
to bring them to my attention.
- .IYours very truly,
/s/ JOHN 0. TOUSIGNANT
JOHN D. TOUSIGNANT, ' {
Personnel & Administrative Management Officer.
VG1mes
c.c. Personnel
Files
Silverstein"
I - 38 -
6 v
CV. F. 0.
65-2730
JBOD:jmc
' "Dear Mr. TOUSIGNANT, Q
"Box 88 Pupin Lab.
Columbia University
New York 2? N.Ii'Apr. 23, l9L8
859h0
210101
_ "I wish to inform you that I plan to return to the
Clnvclnnd Lwboratory on or about June l, 19b8," '
"May I take this opportunity e£ also of expressing
my appreciation for the promotion recently granted me?
"Pleas .inform me of any necessary formalities
pursuant to my return to active duty.
"Please call me onothis
-"ToJOF
Write letter for my signature telling
him what to do.
A ll
_ 39 _Cordially yours,
/s/ WILLIAM PERL
I !I
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" NASA lkwis
' U Cleveland, Ohio,' E
December 10, l9hB.
MEMORHNDUMFor Personnel Officer: ww 777 Z 7 KY zZ_V* _>U _
Subject: Recommendation for promotion of Mr. WILLIAM PERL, Chief,
Theoreticamnalysis Panel, Wind Tunneland Flight Division.
"1. It is recommended that Mr. WILLIAM PERL be promoted from .
Aeronautical Research Scientist VI to Aeronautical Research Scientist VII
Mr. PERL has been with the NACA for almost 10 years except for a period
of approximately 18 months in which he was taking graduate work at Calif
ornia Institute of Technology and Columbia University. He has now com-
pleted his course work and thesis for his Doctors degree. -- '
"2. Mr. PERL's work has been outstanding during the entire period of _
his employment. His knowledge and skill in the fields of theoretical and
applied aerodynamics rank him among the leaders, and several of his papers .
may pove to be cla ssics in their fields. During his stay at Columbia
University, Mr. PERL served as assistant to Dr.von KAHIAN, who has the
highest respect for Mr. PERL*s scientific ability.
"3. Mr. PERL is in charge of the Theoretical Analysis Panel_of the
Hind Tunnel and Flight Division which is engaged at present in the funda-
mental studies of three major fields: supersonic flow, transonic flow,
and boundary layers. In addition to supervising studies on these subjects,
Mr. PERL is personally engaged in preparing for publication a new theory
on transonic flows, which is believed to be a substantial contribution to
the subject. .
"h. Because of Mr. PERL's outstanding researches in_the field of
theoretical and applied aerodynamics and because of the invaluable and
irreplaceable nature of his contributions, it is recommended that he be
promoted to the position of Aeronautical Research Scientist VII. Mr. PERL
is entitled to a P-7 grade according to the present classification.- I
/s/ ABE sxtvsnsnzm _
E _ ABE SILVERSTEIN, Chief; ~
E Wind Tunnel and Flight Division. g
AS; aw CLASSIFICATION HECOMENDATTON: 'December 30, 19h8
Allocated to class titled, Supersonics Theoretical
Scientist, Description bO2, Grade P8, which is pending
NADA Headquarters approval.
Arrsoven 1/7/1.9 .1 _ ho _ '
_ A 7' ~ ..,.-. - 4" _ _+_:'-__ -~. ____ >__ A- _ _ _____ ...__»_e__A .~> _A..._._-.-...__.d_,... ._.-._... ~__-.,...___-u ..~4.._@.;_- -- ~ , ,
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' "NACA Lewis
- "Gleveland, Ohio,
' _ February 2, l9h9
usuQa'mm,ms_Eoric111e1t,imndiTunne1_=ma-1-might-mvision; - ~ e r" 4 r"
___________;
Subject: Request for official leave. _
"1. Official leave is requested for the period of January 2h through
January 2B during which time the writer attended the annual meetings of the
Institute of Aeronautical Sciences and the American Physical Society in '
New York. -
'12. Some highlights of the meetings are as follows: '
" a! The pa
…[truncated]