US Army Air Force
B-29 Superfortress Flight Engineers Standard Procedures 1944
Here is a WWII-era Second Air Force handbook of Standard Procedures for the Flight Engineer, dated July 1944. The 70+ page pocket reference contains all of the procedures necessary for the Flight Engineer to fulfill his duties aboard ship including illustrations and diagrams.
Measures ~6 inches by 4 inches and is in very good condition for its age.