About this recording 483–15 April 20, 1971 Unknown Conversation No. 483-15 Date: April 20, 1971 Time: Unknown between 1:25 and 3:04 pm Location: Oval Office Unknown people (Secret Service agents) met. The President's schedule The unknown people left at an unknown time before 3:04 pm. Secret White House Tapes | Richard M. Nixon Presidency 483–15 Rewind 10 seconds Play/Pause Fast-forward 10 seconds 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