ebook,World  Spaceflight News, National  Aeronautics and Space Administration (NASA), Christopher C.  Kraft, John H.  Glenn, M. Scott  Carpenter, Eugene F.  Kranz, George M.  Low,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,Progressive Management,SCIENCE / Astrophysics & Space Science,TECHNOLOGY & ENGINEERING / Aeronautics & Astronautics" />