Aviation Gunnery Booklets: Machine Guns and Related Subjects USAAF WWII F-80 It is in decent condition

It is in decent condition for its age

Measures ~2 3/8" square and ~ 1 5/8" deep

The lettering on the panels are slightly worn

as well as the bombardier B24 Liberator

but with markings for engines 1 & 2 or L & R

Aviation Gunnery Booklets: Machine Guns and Related Subjects USAAF WWII F-80 It is in decent conditionThis is a set of two original WWII era booklets on Machine Guns (50 and 30 caliber) and related subjects, including sighting, harmonization, range estimation, and others. These were published by the Gunnery Division of the USAAF Pre flight School at Santa Ana Army Base in California during the 1940's. The booklets are 22 and 24 pages respectively. These came to us from the estate of a B 17 flight instructor.