Stephen B. Bull and Alexander P. Butterfield met in the Oval Office of the White House on an unknown date, sometime between 1:51 pm on July 19, 1972 and 9:33 am on July 29, 1972. The Oval Office taping system captured this recording, which is known as Conversation 747-015 of the White House Tapes.
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White House Tapes: Sound Recordings of Meetings and Telephone Conversations of the Nixon Administration, 1971-1973
Tape Subject Log