US Army Air Force
B-29 Superfortress Mechanics Handbooks (2)
Here are two pocket reference manuals for mechanics servicing the WW B-29 Superfortress Bomber. One 70+ page handbook, measuring ~ 5 inches by ~6 inches, was printed in Nov 1944 and reviews the basic mechanical preventive maintenance checks and lists the technical orders for all other procedures and systems. The second (blue), measuring ~4 inches by ~7 inches, is a 38-page photocopy covering basic troubleshooting.
This listing is for both pocketbooks.