Project Mercury: A Chronology - A History of America's First Manned Spacecraft for the Shepard, Grissom, Glenn, Carpenter, Schirra, Cooper Flights (NASA SP-4001)    by Progressive Management
Price: $9.99 USD. 67970 words. Published on November 29, 2011. .
This official NASA history document - converted for accurate flowing-text e-book format reproduction - is a comprehensive account of the events of Project Mercury, America's first manned spacecraft.

Project Mercury: Results of the First United States Manned Orbital Space Flight, February 20, 1962, Friendship 7 Mission of John Glenn (Mercury-Atlas 6, MA-6), Including Air-to-Ground Transcript    by Progressive Management
Price: $9.99 USD. 85370 words. Published on February 16, 2012. .
This official NASA history document - converted for accurate flowing-text e-book format reproduction - presents the results of the first United States manned orbital space flight conducted on February 20, 1962, and includes a complete minute-by-minute air-to-ground transcript, along with John Glenn's flight report.