President Kennedy signs the Limited Nuclear Test Ban Treaty in the Treaty Room at the White House. 7th October 1963. Left to Right: William Hopkins, Senator Mike Mansfield, John J. McCloy, Adrian S. Fisher, Senator John Pastore, W. Averell Harriman, Senator George Smathers, Senator J.W. Fulbright, Secretary of State Dean Rusk, Senator George Aiken, President Kennedy, Senator Hubert H. Humphrey, Senator Everett Dirksen, William C. Foster, Senator Howard W. Cannon, Senator Leverett Saltonstall, Senator Thomas H. Kuchel, Vice President Johnson. Photo: Robert Knudsen, White House. Washington D.C., USA. (PHoto by Galerie Bilderwelt/Getty Images)