About this recording 6–166 President Richard M. Nixon White House operator July 20, 1971 White House Operator Richard M. Nixon Conversation No. 6-166 Date: July 20, 1971 Time: Unknown between 7:57 pm and 8:07 pm Location: White House Telephone The President talked with the White House operator. Call to Tricia Nixon Cox 89 NIXON PRESIDENTIAL MATERIALS STAFF Tape Subject Log (rev. 10/08) Secret White House Tapes | Richard M. Nixon Presidency 6–166 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