USAAF Moffett Airfield 1942 Yearbook (Final Army Class 42-G) BT-13 and on the B-29 it

and on the B-29 it was installed on the flight engineers instrument panel

Like so many other companies

for an order by the US Air Force with a serial # prefix indicating year of manufacture of 1954

see illustration from the B-17G Erection and Maintenance Manual in the photos

USAAF Moffett Airfield 1942 Yearbook (Final Army Class 42-G) BT-13 and on the B-29 itThis is an original "Hangar" yearbook for the US Army Air Corps' Class 42 G of Moffett Field, California, May 1942. Class 42 G was the final graduating class from Moffett Field before it was turned back to the US Navy in April 1942, with its undergraduates subsequently transferring to Chico Army Airfield, California. It includes photos and brief bios of all pilots in four graduating flights (A D) It is in very good condition for its age.