William F. Friedman NSA Archive - Thesis Paper by Friedman Regarding an Examination Into the Duties of the Officer-In-Charge of the Signal Intelligence Service, 1934 - 4in1

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Files W.F.F. Archive Reports and Research Notes Thesis Paper by Friedman Regarding an Examination Into the Duties of the Officer-In-Charge of the Signal Intelligence Service, 1934

Examination-Thesis Submitted by W.F. Friedman; the Duties of the Officer-In-Charge of the Signal Intelligence Service, GCHQ

Document A99863