About this recording 3–181 President Richard M. Nixon White House operator UNKNOWN May 28, 1971 White House Operator Unknown Richard M. Nixon Secret White House Tapes | Richard M. Nixon Presidency 3–181 Backward Play Stop Forward Download audio Previous 504–9 Next 507–1 More Richard M. Nixon Recordings View all Richard M. Nixon tapes 507–1 audio icon 3–190 audio icon 3–191 audio icon 507–2 audio icon 507–3 audio icon 507–4 audio icon 507–5 audio icon 507–6 audio icon 507–7 audio icon 254–10 audio icon