While many books have been written about the historical development of the Space Shuttle, this book is without a doubt the best and most thorough of all. In addition, to the comprehensive text, the book contains hundreds of black and white and color photographs as well as numerous line drawings to further help the reader understand this marvelous space vehicle. Roughly the first 40% of the book covers the developmental history of the Space Shuttle from the early designs of Sanger, Bredt and von Braun, though the X-planes and Dyna-Soar to the many numerous NASA designs of which there are several hundred. These first 200 hundred pages far eclipse any other book on the subject and focus on the engineering side of the project and avoids most of the political discussions that accompany most other books on the subject. The next 60-70 pages cover the development of the present Space Shuttle. After this large introductory section, the book examines the first 100 mission of the Space Shuttle, including the Challenger accident and all the changes made to the Shuttles to improve flight worthiness. The final sections provide very technical descriptions of all aspects of the space shuttle from the landing gear, the thermal control system, the heat shields and much, much more. While I can't comment about the technical accuracy of all these sections, for those sections that I'm familiar with, the thermal control system, the environmental system and EVAs, I couldn't find anything wrong.
One final thing to add, in my over ten plus years working as a NASA contractor at the Johnson Space Center, I would say that I have referred to this book more than any other when I'm looking for information about the Space Shuttle, whether it is just general information or something more technical.