John F. Kennedy and Nikita Khrushchev March 13, 1969
Lyndon Johnson April 10, 1969
Ronald Reagan April 24, 1969
Richard Nixon June 5, 1969
Lyndon Johnson and Richard Nixon June 19, 1969
Richard Nixon September 25, 1969
Richard Nixon October 23, 1969
Richard Nixon and Spiro Agnew December 18, 1969
U. S. Presidents January 1, 1970
Richard Nixon, Wilson, Kosygin February 26, 1970
Richard Nixon March 26, 1970
Richard Nixon March 27, 1970
Herbert Hoover April 18, 1970
John F. Kennedy April 23, 1970
Ronald Reagan and others April 27, 1970
Theodore Roosevelt April 27, 1970
Richard Nixon June 4, 1970
