About this recording 451–11 President Richard M. Nixon Alexander P. Butterfield February 18, 1971 Alexander P. Butterfield Richard M. Nixon Conversation No. 451-11 Date: February 18, 1971 Time: Unknown between 1:10 pm and 1:20 pm Location: Oval Office The President met with Alexander P. Butterfield Request Butterfield left at an unknown time before 1:20 pm Secret White House Tapes | Richard M. Nixon Presidency 451–11 Backward Play Stop Forward Download audio Previous 450–25 Next 452–1 More Richard M. Nixon Recordings View all Richard M. Nixon tapes 452–1 audio icon 454–1 audio icon 453–1 audio icon 452–10 audio icon 452–11 audio icon 452–12 audio icon 452–13 audio icon 452–14 audio icon 452–15 audio icon 452–16 audio icon