About this recording 439–16 President Richard M. Nixon UNKNOWN May 21, 1973 Unknown Richard M. Nixon Conversation No. 439-16 Date: May 21, 1973 Time: Unknown between 1:10 pm and 3:23 pm Location: Old Executive Office Building President met with an unknown person. Instructions The unknown person left at an unknown time before 3:23 pm. Secret White House Tapes | Richard M. Nixon Presidency 439–16 Rewind 10 seconds Play/Pause Fast-forward 10 seconds 0:00 Download audio Previous 949–9 Next 47–1 More Richard M. Nixon Recordings View all Richard M. Nixon tapes 47–1 audio icon 450–1 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