Project Mercury. NASA/Langley, April 1959. Approx 8 x 10 in. pamphlet with photographs. SIGNED BY M. SCOTT CARPENTER, LEROY G. COOPER JR, JOHN H. GLENN JR, VIRGIL I. GRISSOM, WALTER M. SCHIRRA JR, ALAN B. SHEPARD JR, AND DONALD K. SLAYTON with an inscription along the bottom front: "from my private Mercury 7 collection - Wally Schirra".