Outdated
This book came out in 1986--and has nothing on the Challenger disaster, the International Space Station, the Mir space station, the breakup of the Soviet Union, the Columbia breakup, China's involvement in space or any of the other questions which face the space programs around the world today. It's great for understanding the early years of the space program and the political context, but much has happened since then. At best, I'd say it is a reference that will be used by others who are writing more up-to-date, and more definitive works about mankind's venture into space.