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 Back 10s Play/Pause Skip 10s 0:00 Download audio Previous 949–9 Next 450–1 More Richard M. Nixon Recordings View all Richard M. Nixon tapes 450–1 audio icon 47–1 audio icon 450–10 audio icon 450–11 audio icon 450–12 audio icon 450–13 audio icon 450–14 audio icon 450–15 audio icon 450–16 audio icon 450–17 audio icon