About this recording 749–6 Alexander P. Butterfield UNKNOWN July 21, 1972 Alexander P. Butterfield Unknown Secret White House Tapes | Richard M. Nixon Presidency 749–6 Backward Play Stop Forward Download audio Previous 748–9 Next 197–10 More Richard M. Nixon Recordings View all Richard M. Nixon tapes 197–10 audio icon 136–10 audio icon 136–11 audio icon 197–11 audio icon 136–12 audio icon 197–12 audio icon 197–13 audio icon 136–13 audio icon 136–14 audio icon 197–14 audio icon