Interview with Forrest Pogue
(1973)
Interview at George C. Marshall Foundation. Tape #1: Orientation to the Friedman Collection
(4 June 1974)
Interview at George C. Marshall Foundation. Tape #2: History of the Friedmans
(4 June 1974)
Interview at George C. Marshall Foundation. Tape #3: The Chinese Cipher
(5 June 1974)
Interview at George C. Marshall Foundation. Tape #4: Contents and Use of the Friedman Collection
(5 June 1974)
Interview at George C. Marshall Foundation. Tape #5: Fabyan, Riverbank, and the Biliteral Cipher
(6 June 1974)
Interview with Ronald Clark
(1975)
Oral Histories with NSA OH-1976-16
(Interview with Virginia T. Valaki, 11 Nov 1976)
Oral Histories with NSA OH-1976-17
(Interview with Virginia T. Valaki, 11 Nov 1976)
Oral Histories with NSA OH-1976-18
(Interview with Virginia T. Valaki, 11 Nov 1976)
Oral Histories with NSA OH-1976-22
(Interview with R. Louis Benson, 9 Jan 1976)