William F. Friedman NSA Archive - Memorandum on the Duties of the Chief Signal Officer, Army Regulation 105-5, Budget Estimates, and the Signals Intelligence Service, 1939 - 4in1

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Files W.F.F. Archive Correspondence, Memoranda, and Personnel File Records Memorandum on the Duties of the Chief Signal Officer, Army Regulation 105-5, Budget Estimates, and the Signals Intelligence Service, 1939

Study with Respect to the Duties of the Chief Signal Officer, In so Far AS the Preparation of Codes and Ciphers Is Concerned

Document A40278