On June 23, 1971, President Richard M. Nixon, H. R. ("Bob") Haldeman, Alexander P. Butterfield, Stephen B. Bull, and Charles W. Colson met in the Oval Office of the White House at an unknown time between 11:04 am and 12:45 pm. The Oval Office taping system captured this recording, which is known as Conversation 528-001 of the White House Tapes. Participants: Nixon, Richard M. (President); Haldeman, H. R. ("Bob"); Butterfield, Alexander P.; Bull, Stephen B.; Colson, Charles W.
- Része ennek White House Tapes: Sound Recordings of Meetings and Telephone Conversations of the Nixon Administration, Oval Office Sound Recordings