SPSIS 312.1 • 

S(Sgt. Joseph L. Bro1do, 1 4 Dithridge Street, 

Pitteburgh, Penna7lvan1&. 

Dear Sergeant Broido: 

REF ID:~lOl ..,,. 

23 August 194:4. 

In response to 7our special delivery letter which arrived 

this morning, I do not believe that 7our desire to obtain 

"real crJPtographic experience• could be met b7 continuance 

ot service in the Ar117 Air Forces inasmuch as practicall7 all 

the crJPtan&l7tic vork in the Ar..,. is under the Signal Corps. 

It 7ou b&ve a- deep desire to go into cryptanal7sis, it 

ia poaeible that a tranater could be ettected b7 7our initiating a request for tranater tbrough cbarmela to the Chiet 

Signal Ort1cer and &&king tor aaaigmaent to CrJPtographic training. There 1•, however, one possible drawback to this 

1n your caae, and I teel I should mention it. You have just returned f"roa tvo 7eara ot overseas dut7 but I do not believe 

that thia would be a bar to aend.1.Dg 7ou overseas again after 

J'OU b&Te gone through th• proper tMining courses. In tact, 

I should a&7 that there vill be a high prob&bilit7 ot 7our 

being shipped o:veraeae again. It thia makes no ditterence to 

7ou and U I were J"OU i would 1n1 ti& te the request ror tranarer 

aa per the aboYe. Send :me a coJ>7 or the letter intorma.117 and 

I will aee the proper people t...8Pe vho iay turther J'Our interests. 

' With beat regards, I am •. 

Sincerel7 7oura. 

William F. Pr1edma.n. 

Director ot CoJmllbications 

Research. 

pproved for Release by NSA on 03-25-2014 pursuant to E.O. 

13526 
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• REF ID:A701 • 

• 

Mr. William Friedman 

3932 Military Boad 

Washington, D. c. 

Dear Mr. Friedman; 

August 22, 1944 

This letter follows the recent conversation of my uncle,Louia Broida. with 

your wife over the ~ossibilitiea of enlisting your aid in the advancement 

of my Army Cr1J>togr&:r>hic career. By way of further introduction, I am 

the son of Joseph Broido, former classmate of yours in Pittsburgh. 

I have just returned from two years of overseas dut7 during which time I 

was classified (Army Classification No. 807), as a crJPtographer. In the 

real sense of the word, I was a code clerk end was engaged in encoding and 

decoding inter-unit messages. This work entailed use of book codes, both 

our own and British, Type X machine, and S:ygoba. When I was sent overseas 

I was a radio o~erator and after a few months of such work was sent to the 

British C1"1Ptography school in Cairo. This I believe haa given me a fairly 

broad background in both the American and British systems. 

I am deeply interested in securing real cryptography experience and in 

learning how to break: down intercepted messages and in the construction of 

new code systems. This I believe to be impossible if I continue to be 

shifted about from one Army post to another. -

At the present moment, I am completing a 24 day leave and I am scheduled to 

report on September 2 to the Army Air Corps Be-Distribution Station #2, 

Miami Beach, Florida. I have been led to understand that I will be given 

a three week rest there, during which time re-assignments are ilven. 

I would be most a'!'>Preciative of any aid 1ou might give me in securing an 

appointment to either a position or school where I might further my 

cryptographic knowledge. If 70u care to contact me, the best method would 

be through m7 mother, as I don1 t know what my Florida address will be. Ber 

name and address ls: 

Mrs. Joseph Broida 

144 Dithridge Street 

Pittsburgh, Penna. 

I would be most appreciative of any consideration or advice you might give me. 

Sincerely, 

~...,.t/a,~ 

Staff Sgt. Joseph L. Broido 

(Army Serial No. 13041836) 

u. s. Army Air Corps