Dictation recording 7 of 10: Office of Michael Witten, March 29, 1954.
Dictation recording 8 of 10: Office of Michael Witten, April 20, 1954.
Dictation recording 9 of 10: Office of Michael Witten, September 13, 1954.
Dictation recording 10 of 10: Office of Michael Witten, June 21, 1961.