Bombardiers' Information File US Army Air Force May 1945 Viscount The book is small

The book is small

It has also been identified visually in cockpit illustrations in the flight manuals of the patrol aircraft PBY-5 Catalina and the dive bomber SB2C Helldiver

This particular protractor has a tag from the US Naval Observatory stamped 1945

and "Beluftungsventil" (vented)

Bombardiers' Information File US Army Air Force May 1945 Viscount The book is smallHere is a WWII era Bombardiers' Information File published by the US Army Air Force May 1945. It contains the essential information on the duties and responsibilities of the bombardier. It is in exceptional condition given its age. Measures 8. 5 x 11 inches, and ~0. 5 inches thick.