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 Backward Play Stop Forward Download audio Previous 262–9 Next 264–1 More Richard M. Nixon Recordings View all Richard M. Nixon tapes 264–1 audio icon 541–1 audio icon 264–10 audio icon 264–11 audio icon 264–12 audio icon 264–13 audio icon 264–14 audio icon 6–171 audio icon 6–172 audio icon 6–173 audio icon