Sigma 7 The Six Mercury Orbits of Walter M. Schirra, Jr.

“This book includes an early biography for Schirra and details of the Sigma 7 spaceflight, with the events leading up to the flight and post-flight activities. The author includes many outstanding and interesting historical photographs, such as mission training, publicity photos of the Mercury astronauts, and visits with President John F. Kennedy. This book will make a great addition to the library of any enthusiasts interested in the history of the space program. Summing Up: Recommended. All readers.” (J. Z. Kiss, Choice, Vol. 54 (5), January, 2017)