George Aiken (R-VT) 
Jim Allen (D-AL)
Howard Baker, Jr. (R-TN)
Wallace Bennett (R-UT)
Alan Bible (D-NV)
Harry Byrd, Jr. (D-VA)
Robert Byrd (D-WV)
Clifford Case (R-NJ)
Norris Cotton (R-NH)
Carl Curtis (R-NE)
Thomas Dodd (D-CT)
Robert Dole (R-KS)
Peter Dominick (R-CO)
James Eastland (D-MS)
Sam Ervin (D-NC)
Paul Fannin (R-AZ)
Robert Griffin (R-MI)
Edward Gurney (R-FL)
Clifford Hansen (R-WY)
Spessard Holland (D-FL)
Ernest Hollings (D-SC)
Roman Hruska (R-NE)
Len Jordan (R-ID)
Charles Mathias (R-MD)
John McClellan (D-AR)
Gale McGee (D-WY)
Thomas McIntyre (D-NH)
Lee Metcalf (D-MT)
Joseph Montoya (D-NM)
Frank Moss (D-UT)
George Murphy (R-CA)
John Pastore (D-RI)
James Pearson (R-KS)
Jennings Randolph (D-WV)
Richard Russell (D-GA)
Richard Schweiker (R-PA)
Hugh Scott (R-PA)
Margaret Chase Smith (R-ME)
John Sparkman (D-AL)
William Spong (D-VA)
Ted Stevens (R-AK)
Herman Talmadge (D-GA)
Strom Thurmond (R-SC)
John Tower (R-TX)
Milton Young (R-ND)
Gordon Allott (R-CO) 
Birch Bayh (D-IN)
Caleb Boggs (R-DE)
Edward Brooke (R-MA)
Quentin Burdick (D-ND)
Frank Church (D-ID)
Marlow Cook (R-KY)
John Sherman Cooper (R-KY)
Alan Cranston (D-CA)
Thomas Eagleton (D-MO)
Allen Ellender (D-LA)
Hiram Fong (R-HI)
William Fulbright (D-AR)
Charles Goodell (R-NY)
Fred Harris (D-OK)
Vance Hartke (D-IN)
Philip Hart (D-MI)
Mark Hatfield (R-OR)
Harold Hughes (D-IA)
Daniel Inouye (D-HI)
Henry Jackson (D-WA)
Jacob Javits (R-NY)
Edward Kennedy (D-MA)
Warren Magnuson (D-WA)
Mike Mansfield (D-MT)
George McGovern (D-SD)
Walter Mondale (D-MN)
Gaylord Nelson (D-WI)
Bob Packwood (R-OR)
Claiborne Pell (D-RI)
Charles Percy (R-IL)
William Proxmire (D-WI)
Abraham Ribicoff (D-CT)
William Saxbe (R-OH)
John Stennis (D-MS)
Harrison Williams (D-NJ)
John Williams (R-DE)
Stephen Young (D-OH)
Clinton Anderson (D-NM)
Henry Bellmon (R-OK)
Howard Cannon (D-NV)
Barry Goldwater (R-AZ)
Albert Gore (D-TN)
Mike Gravel (D-AK)
Everett Jordan (D-NC)
Russell Long (D-LA)
Eugene McCarthy (D-MN)
Jack Miller (R-IA)
Karl Mundt (R-SD)
Edmund Muskie (D-ME)
Winston Prouty (R-VT)
Ralph Smith (R-IL)
Stuart Symington (D-MO)
Joseph Tydings (D-MD)
Ralph Yarborough (D-TX)