Four Vice-Presidents
Four Vice Presidents: L-R, outgoing Pres. Lyndon B. Johnson (the 37th vice president); incoming Pres. Richard Nixon (36th); Everett Dirksen; Spiro Agnew, incoming vice president (39th); and the outgoing Vice President Hubert Humphrey (38th), January 20, 1969.
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"Johnson, Nixon, Agnew, Humphrey cropped."
http://en.wikipedia.org/wiki/File:Johnson,_Nixon,_Agnew,_Humphrey_cropped.jpg
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