H. R. ("Bob") Haldeman served as President Richard Nixon's White House Chief of Staff from January 1969 until his resignation in April 1973. Acting as Nixon's primary gatekeeper and closest aide, Haldeman was a central figure during the White House taping period and is featured prominently in hundreds of recorded conversations. His tenure ended abruptly when he was forced to resign due to his deep involvement in the Watergate cover-up, most notably captured directing the obstruction of justice on the infamous "Smoking Gun" tape.

On April 20, 1973, President Richard M. Nixon, John D. Ehrlichman, and H. R. ("Bob") Haldeman met in the Oval Office of the White House at an unknown time between 12:07 pm and 12:15 pm. The Oval Office taping system captured this recording, which is known as Conversation 903-017 of the White House Tapes.
On April 20, 1973, President Richard M. Nixon, Henry A. Kissinger, John D. Ehrlichman, H. R. ("Bob") Haldeman, unknown person(s), and Stephen B. Bull met in the Oval Office of the White House from 12:15 pm to 12:34 pm. The Oval Office taping system captured this recording, which is known as Conversation 903-019 of the White House Tapes.
On April 25, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the President's office in the Old Executive Office Building at an unknown time between 10:58 am and 11:06 am. The Old Executive Office Building taping system captured this recording, which is known as Conversation 430-002 of the White House Tapes.
On April 25, 1973, H. R. ("Bob") Haldeman, White House operator, President Richard M. Nixon, John D. Ehrlichman, unknown person(s), and Stephen B. Bull talked on the telephone at an unknown time between 11:06 am and 1:51 pm. The White House Telephone taping system captured this recording, which is known as Conversation 038-140 of the White House Tapes.
On April 25, 1973, H. R. ("Bob") Haldeman, White House operator, unknown person(s), John D. Ehrlichman, President Richard M. Nixon, and Stephen B. Bull talked on the telephone at an unknown time between 11:06 am and 1:51 pm. The White House Telephone taping system captured this recording, which is known as Conversation 038-143 of the White House Tapes.
On April 25, 1973, H. R. ("Bob") Haldeman, Stephen B. Bull, President Richard M. Nixon, and John D. Ehrlichman talked on the telephone at an unknown time between 11:06 am and 1:51 pm. The White House Telephone taping system captured this recording, which is known as Conversation 038-141 of the White House Tapes.
On April 25, 1973, President Richard M. Nixon, H. R. ("Bob") Haldeman, John D. Ehrlichman, White House operator, Geoffrey C. Shepard, unknown person(s), and Stephen B. Bull met in the President's office in the Old Executive Office Building from 11:06 am to 1:55 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 430-004 of the White House Tapes.
On April 25, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the President's office in the Old Executive Office Building at an unknown time between 2:01 pm and 3:14 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 430-007 of the White House Tapes.
On April 25, 1973, H. R. ("Bob") Haldeman and President Richard M. Nixon talked on the telephone from 4:35 pm to 4:36 pm. The White House Telephone taping system captured this recording, which is known as Conversation 038-147 of the White House Tapes.
On April 25, 1973, H. R. ("Bob") Haldeman and President Richard M. Nixon met in the President's office in the Old Executive Office Building from 4:35 pm to 4:36 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 430-021 of the White House Tapes.
On April 25, 1973, President Richard M. Nixon, H. R. ("Bob") Haldeman, and Thomas Hart met in the President's office in the Old Executive Office Building from 4:40 pm to 5:35 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 430-022 of the White House Tapes.
On April 25, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone from 6:57 pm to 7:14 pm. The White House Telephone taping system captured this recording, which is known as Conversation 038-150 of the White House Tapes.
On April 25, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the President's office in the Old Executive Office Building from 6:57 pm to 7:14 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 430-030 of the White House Tapes.
On April 25, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone from 7:46 pm to 7:53 pm. The White House Telephone taping system captured this recording, which is known as Conversation 038-157 of the White House Tapes.
On April 25, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the President's office in the Old Executive Office Building from 7:46 pm to 7:53 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 430-036 of the White House Tapes.
On April 26, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the Oval Office of the White House at an unknown time between 8:04 am and 8:55 am. The Oval Office taping system captured this recording, which is known as Conversation 905-007 of the White House Tapes.
On April 26, 1973, President Richard M. Nixon, H. R. ("Bob") Haldeman, and unknown person(s) met in the Oval Office of the White House from 8:55 am to 10:24 am. The Oval Office taping system captured this recording, which is known as Conversation 905-008 of the White House Tapes.
On April 26, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the President's office in the Old Executive Office Building at an unknown time between 12:34 pm and 1:13 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 431-001 of the White House Tapes.
On April 26, 1973, H. R. ("Bob") Haldeman and President Richard M. Nixon talked on the telephone from 3:52 pm to 3:54 pm. The White House Telephone taping system captured this recording, which is known as Conversation 045-009 of the White House Tapes.
On April 26, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the President's office in the Old Executive Office Building from 3:52 pm to 3:54 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 431-008 of the White House Tapes.
On April 26, 1973, President Richard M. Nixon, H. R. ("Bob") Haldeman, White House operator, Richard G. Kleindienst, John D. Ehrlichman, Henry E. Petersen, Ronald L. Ziegler, Stephen B. Bull, and Manolo Sanchez met in the President's office in the Old Executive Office Building from 3:59 pm to 9:03 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 431-009 of the White House Tapes.
On April 26, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone from 9:57 pm to 9:59 pm. The White House Telephone taping system captured this recording, which is known as Conversation 045-029 of the White House Tapes.
On April 26, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone from 10:07 pm to 10:09 pm. The White House Telephone taping system captured this recording, which is known as Conversation 045-032 of the White House Tapes.
On April 27, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the Oval Office of the White House from 7:50 am to 8:05 am. The Oval Office taping system captured this recording, which is known as Conversation 906-001 of the White House Tapes.
On April 27, 1973, President Richard M. Nixon, H. R. ("Bob") Haldeman, Ronald L. Ziegler, and White House operator met in the Oval Office of the White House from 4:41 pm to 5:00 pm. The Oval Office taping system captured this recording, which is known as Conversation 906-012 of the White House Tapes.
On April 27, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the Oval Office of the White House at an unknown time between 5:43 pm and 6:04 pm. The Oval Office taping system captured this recording, which is known as Conversation 906-019 of the White House Tapes.
On April 27, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the Oval Office of the White House at an unknown time between 5:43 pm and 6:04 pm. The Oval Office taping system captured this recording, which is known as Conversation 906-020 of the White House Tapes.
On April 27, 1973, President Richard M. Nixon, H. R. ("Bob") Haldeman, Stephen B. Bull, White House operator, Manolo Sanchez, and Ronald L. Ziegler met in the Oval Office of the White House from 6:49 pm to 8:04 pm. The Oval Office taping system captured this recording, which is known as Conversation 906-024 of the White House Tapes.
On April 28, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone at Camp David from 8:43 am to 9:01 am. The Camp David Study Table taping system captured this recording, which is known as Conversation 164-004 of the White House Tapes.
On April 30, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone from 10:16 pm to 10:20 pm. The White House Telephone taping system captured this recording, which is known as Conversation 045-041 of the White House Tapes.
On April 30, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone at an unknown time between 11:50 pm and 11:53 pm. The White House Telephone taping system captured this recording, which is known as Conversation 045-072 of the White House Tapes.
On May 2, 1973, President Richard M. Nixon, Ronald L. Ziegler, unknown person(s), and H. R. ("Bob") Haldeman met in the Oval Office of the White House from 9:59 am to 10:08 am. The Oval Office taping system captured this recording, which is known as Conversation 909-011 of the White House Tapes.
On May 2, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone from 10:02 am to 10:04 am. The White House Telephone taping system captured this recording, which is known as Conversation 045-133 of the White House Tapes.
On May 2, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the Oval Office of the White House at an unknown time between 5:49 pm and 6:15 pm. The Oval Office taping system captured this recording, which is known as Conversation 910-003 of the White House Tapes.
On May 2, 1973, Alexander M. Haig, Jr. and H. R. ("Bob") Haldeman talked on the telephone at an unknown time between 6:35 pm and 7:55 pm. The White House Telephone taping system captured this recording, which is known as Conversation 045-149 of the White House Tapes.
On May 9, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone from 7:38 am to 7:56 am. The White House Telephone taping system captured this recording, which is known as Conversation 045-166 of the White House Tapes.
On May 9, 1973, Alexander M. Haig, Jr. and H. R. ("Bob") Haldeman talked on the telephone at an unknown time between 6:35 pm and 7:55 pm. The White House Telephone taping system captured this recording, which is known as Conversation 045-178 of the White House Tapes.
On May 9, 1973, President Richard M. Nixon, Alexander M. Haig, Jr., Manolo Sanchez, White House operator, H. R. ("Bob") Haldeman, and J. Fred Buzhardt, Jr. met in the President's office in the Old Executive Office Building from 6:35 pm to 8:26 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 434-009 of the White House Tapes.
On May 9, 1973, Alexander M. Haig, Jr., H. R. ("Bob") Haldeman, and President Richard M. Nixon talked on the telephone at an unknown time between 6:55 pm and 7:55 pm. The White House Telephone taping system captured this recording, which is known as Conversation 045-181 of the White House Tapes.
On May 10, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the Oval Office of the White House from 11:21 am to 12:05 pm. The Oval Office taping system captured this recording, which is known as Conversation 915-012 of the White House Tapes.
On May 10, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone from 3:24 pm to 3:26 pm. The White House Telephone taping system captured this recording, which is known as Conversation 045-193 of the White House Tapes.
On May 10, 1973, H. R. ("Bob") Haldeman and President Richard M. Nixon met in the President's office in the Old Executive Office Building from 3:24 pm to 3:26 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 435-016 of the White House Tapes.
On May 10, 1973, H. R. ("Bob") Haldeman and President Richard M. Nixon talked on the telephone from 6:01 pm to 6:06 pm. The White House Telephone taping system captured this recording, which is known as Conversation 045-212 of the White House Tapes.
On May 11, 1973, President Richard M. Nixon, H. R. ("Bob") Haldeman, Alexander M. Haig, Jr., and unknown person(s) met in the Oval Office of the White House from 12:53 pm to 2:02 pm. The Oval Office taping system captured this recording, which is known as Conversation 916-019 of the White House Tapes.
On May 11, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone from 2:56 pm to 2:57 pm. The White House Telephone taping system captured this recording, which is known as Conversation 046-011 of the White House Tapes.
On May 11, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the President's office in the Old Executive Office Building from 2:56 pm to 2:57 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 434-023 of the White House Tapes.
On May 13, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone at Camp David from 10:21 am to 10:39 am. The Camp David Study Table taping system captured this recording, which is known as Conversation 165-038 of the White House Tapes.
On May 18, 1973, President Richard M. Nixon, H. R. ("Bob") Haldeman, and unknown person(s) met in the President's office in the Old Executive Office Building from 12:49 pm to 1:52 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 437-011 of the White House Tapes.
On May 18, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the President's office in the Old Executive Office Building from 3:35 pm to 4:34 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 437-019 of the White House Tapes.
On May 20, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone at Camp David from 12:26 pm to 12:54 pm. The Camp David Study Table taping system captured this recording, which is known as Conversation 167-010 of the White House Tapes.
On May 20, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone at Camp David from 4:11 pm to 4:21 pm. The Camp David Study Table taping system captured this recording, which is known as Conversation 167-025 of the White House Tapes.
On May 20, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone at Camp David from 5:30 pm to 5:41 pm. The Camp David Study Table taping system captured this recording, which is known as Conversation 167-027 of the White House Tapes.
On May 29, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone from 1:46 pm to 1:47 pm. The White House Telephone taping system captured this recording, which is known as Conversation 039-029 of the White House Tapes.
On May 29, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the President's office in the Old Executive Office Building from 1:46 pm to 1:47 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 440-060 of the White House Tapes.
On May 29, 1973, President Richard M. Nixon, Ronald L. Ziegler, and H. R. ("Bob") Haldeman met in the President's office in the Old Executive Office Building from 2:00 pm to 3:11 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 440-065 of the White House Tapes.
On June 2, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone at Camp David at an unknown time between 10:54 am and 11:13 am. The Camp David Study Table taping system captured this recording, which is known as Conversation 168-011 of the White House Tapes.
On June 2, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone at Camp David from 11:38 am to 11:39 am. The Camp David Study Table taping system captured this recording, which is known as Conversation 168-015 of the White House Tapes.
On June 3, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone at Camp David from 12:35 pm to 1:11 pm. The Camp David Study Table taping system captured this recording, which is known as Conversation 168-032 of the White House Tapes.
On June 3, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone at Camp David from 3:29 pm to 3:30 pm. The Camp David Study Table taping system captured this recording, which is known as Conversation 168-038 of the White House Tapes.
On June 4, 1973, White House operator, President Richard M. Nixon, and H. R. ("Bob") Haldeman talked on the telephone from 10:05 pm to 10:20 pm. The White House Telephone taping system captured this recording, which is known as Conversation 039-081 of the White House Tapes.
On June 4, 1973, President Richard M. Nixon, White House operator, and H. R. ("Bob") Haldeman talked on the telephone from 10:21 pm to 10:22 pm. The White House Telephone taping system captured this recording, which is known as Conversation 039-083 of the White House Tapes.
On June 7, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone from 7:46 pm to 7:47 pm. The White House Telephone taping system captured this recording, which is known as Conversation 039-143 of the White House Tapes.
On June 14, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman talked on the telephone at an unknown time between 3:58 pm and 4:10 pm. The White House Telephone taping system captured this recording, which is known as Conversation 040-111 of the White House Tapes.
On June 14, 1973, President Richard M. Nixon and H. R. ("Bob") Haldeman met in the President's office in the Old Executive Office Building from 3:58 pm to 4:10 pm. The Old Executive Office Building taping system captured this recording, which is known as Conversation 446-003 of the White House Tapes.