About this recording 478–4 President Richard M. Nixon UNKNOWN April 13, 1971 Unknown Richard M. Nixon Conversation No. 478-4 Date: April 13, 1971 Time: 11:13 am Location: Oval Office The President talked with an unknown person 20 NIXON PRESIDENTIAL MATERIALS STAFF Tape Subject Log (rev. 9/08) Schedule Secret White House Tapes | Richard M. Nixon Presidency 478–4 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