Gunners Information File USAF Manual No 20, for B-29 Superfortress F-4 Phantom The closest example in appearance

The closest example in appearance was used in the 1960's US Navy jet fighter Grumman F-11 Tiger

Our example is yellow-tagged as serviceable

with an interesting history

but all of the pages appear in place and intact

The face is embossed BU AERO US NAVY (i

Gunners Information File USAF Manual No 20, for B-29 Superfortress F-4 Phantom The closest example in appearanceThis post WWII era bound edition of the US Army Air Force's Gunners Information File consists of several separate WWII era manual publications combined into one hardback volume. The first section of ~100 pages describes the operation and maintenance of the . 50 Caliber Browning M2 Aircraft Machine Gun. The 80+ page second section describes sighting and sights. The 30 page third section deals with aircraft recognition. The fourth section discusses