On May 27, 1971, President Richard M. Nixon and Stephen B. Bull met in the Oval Office of the White House at an unknown time between 4:26 pm and 4:28 pm. The Oval Office taping system captured this recording, which is known as Conversation 504-014 of the White House Tapes. Topics include: The President met with Stephen B. Bull. President's schedule - Meeting with Ronald L. Ziegler, Egil G. ("Bud") Krogh, Jr., and John D. Ehrlichman Bull left at an unknown time before 4:28 pm. Participants: Nixon, Richard M. (President); Bull, Stephen B.
- Part of White House Tapes: Sound Recordings of Meetings and Telephone Conversations of the Nixon Administration, Oval Office Sound Recordings