1971 (12 images)

President Nixon is expected to tell the nation and the world in a national radio and television speech late April 7, 1971 that a quarter million U.S. troops will be withdrawn from Vietnam by mid-1972, leaving behind a force of 50,000 or fewer GIs. In his office in the Executive Office Building, across from the White House, Nixon meets with Secretary of State William P. Rogers, Defense Secretary Melvin Laird, and National Security Adviser Henry Kissinger for a final review of the speech. (UPI Photo/Frank Cancellare/Files)

President Richard Nixon signs the message he gave to Congress in which he proposed a $1.1 billion revenue sharing program for rural America, saying it would provide orderly development of rural areas and help them stem migration to the cities. He delivered the message on Capitol Hill on March 10, 1971 in Washington. (UPI Photo/Darryl Heikes/Files)

President and Mrs. Nixon honored the Apollo 14 astronauts with a White House dinner on March 1, 1971. Here, descending the Grand Stairway are LTR: Front Row: Pres. and Mrs. Nixon and Vice President and Mrs. Agnew. Back row: Astronaut and Mrs. Edgar Mitchell; astronaut and Mrs. Stuart Roosa; and astronaut and Mrs. Alan Shepard. (UPI Photo/John Full/Files)

Former world heavyweight champion Cassius Clay (Muhammad Ali) spars with his former sparring partner Jim Ellis at a press conference in Houston's Astrodome June 21, 1971. The two will meet in the ring in the Astrodome on July 26. (UPI Photo/Files)