US Air Force
Air Force Armament Volume I ConAC Manual 50-11
This is an original textbook published in 1949 by the Continental Air Command for the US Air Force ROTC to "...indoctrinate the officer candidate in the fundamental principles of Air Force Armament...". This 8-chapter, ~150-page book contains diagrams, tables, and illustrations regarding weapons systems in use during the early stages of the Cold War and the Korean War.
The book is 8 x 11 inches and in good shape given its age. All pages appear to be present and intact.