[PROJECT MERCURY]. Project Mercury, A Chronology, SP-4001. 1963. An almost day by day account of events from 1958-63. INSCRIBED WITH THEIR SPACECRAFT NAMES AND SIGNED BY SCOTT CARPENTER, GORDON COOPER, AND WALLY SCHIRRA on the frontispiece -- This New Ocean, A History of Project Mercury, SP-4201. 1966. A detailed narrative with extensive facts located in appendixes. INSCRIBED WITH SPACECRAFT NAMES AND SIGNED BY CARPENTER, COOPER, AND SCHIRRA on half title page -- NASA Project Mercury Working Paper Number 160, Summary of Several Short Studies Pertaining to the Retrorocket System Capability for the Mercury Mission. Space Task Group, 9 November 1960. A confidential report with text, diagrams, and graphs, now declassified. INSCRIBED WITH MISSION NAMES AND SIGNED BY CARPENTER, COOPER, AND SCHIRRA on cover. (3)