Files W.F.F. Archive Reports and Research Notes Memoranda and Reports, Resume of Work of the Code and Cipher Section, Annual Report of the Director of Communications Research, Evaluation Studies, 1921-1946
Annual Report of the Director of Communications Research-W.F. Friedman
Friedman Letter Requesting Establishment of an ASA Information and Research Section; Army Security Agency Historical Unit, Wdgss-14
Memorandum to General Carr from W.F. Friedman Re Carr Request
Report of Arrival at London; Memorandum from W.F. Friedman to Chief Signal Officer
Resume' of Work of the Code and Cipher Section; William F. Friedman Correspondence