Humphrey and Nixon August 22, 1968
Humphrey and Johnson October 10, 1968
Spiro Agnew December 4, 1969
Spiro Agnew December 18, 1969
Spiro Agnew March 12, 1970
Henry Wallace April 4, 1974
Nelson Rockefeller April 3, 1975
John C. Calhoun January 19, 1989
Dan Quayle March 30, 1989
Dick Cheney May 18, 1989
Dick Cheney March 28, 1991
Al Gore and Bill Clinton September 24, 1992
Al Gore August 10, 2000
Al Gore October 19, 2000
Al Gore and Tipper Gore December 5, 2002
Al Gore July 13, 2006
Dick Cheney October 5, 2006
