SPACE TREATYSIGNED BY 10 SPACE TRAVELERS.
Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space. Hicksville, NY: S.M. Kessler, 1967. Single sheet, 11 x 17 inches, folded at center. With first day of issue postmark (KSC, September 29, 1967) for the twin 5-cent Gemini postage stamp.
The treaty was unanimously approved by the United Nations in December 1966, and signed in Washington, London and Moscow on January 27, 1967.
SIGNED on the reverse by ALAN BEAN, GENE CERNAN, CHARLES CONRAD, CHARLIE DUKE, DAVE SCOTT, ALAN SHEPARD, TOM STAFFORD, JOHN YOUNG, ALEXEI LEONOV, and VALERY KUBASOV.