Gemini Midprogram Conference, including Experiment Results. NASA SP-121. Washington: 1966. 443 pp. 8 x 10¼ inches. Original printed wrappers.
Signed by eight Gemini astronauts on the front cover, with their Gemini Titan numbers: BUZZ ALDRIN, GORDON COOPER, TOM STAFFORD, WALLY SCHIRRA, JOHN YOUNG, DAVE SCOTT, CHARLES CONRAD, and FRANK BORMAN.