Files W.F.F. Archive Reports and Research Notes Director of Naval Intelligence Memorandum Related to Security Leaks and Newspaper Clippings Related to William and Elizebeth Friedman Cryptanalytic Work, 1934-1941
Folder Cover Titled "The Director Of Naval Intelligence, Navy Department, Washington, D.C."; Tab: Security Leaks (Friedman) 1934-1941
Memorandum for 20a Re IBM Tabulating Equipment Being Used for Cryptanalytical Purposes
Memorandum from Office of Naval Operations Re Undesirable Publicity In Connection with Cryptanalytical Activities by Government Agencies