About this recording 483–1 President Richard M. Nixon Stephen B. Bull April 20, 1971 Stephen B. Bull Richard M. Nixon Conversation No. 483-1 Date: April 20, 1971 Time: Unknown between 7:55 am and 7:57 am Location: Oval Office The President met with Stephen B. Bull. The President's schedule -H.R. (“Bob”) Haldeman Bull left at an unknown time before 7:57 am. Secret White House Tapes | Richard M. Nixon Presidency 483–1 Backward Play Stop Forward Download audio Previous 482–9 Next 485–1 More Richard M. Nixon Recordings View all Richard M. Nixon tapes 485–1 audio icon 252–1 audio icon 484–1 audio icon 252–10 audio icon 484–10 audio icon 252–11 audio icon 484–11 audio icon 252–12 audio icon 484–12 audio icon 252–13 audio icon