This title contains:
- Lockheed Model 12A Flight Instruction Manual, written by young Lockheed engineer C L (Clarence) Johnson. Reprinted 12-1-56 with approx 45 pages.
- USAAF Handbook of Operating and Flight Instructions for the C-40 and C-40A, Technical Order No 01-75CB-1 dated 25-3-39 revised to 25-10-40, with approx 26 pages.
- USAAF Preliminary Handbook of Overhaul Instructions for the C-40 C-40A and C-40B, Technical Order No 01-75CB-3 dated 1-9-39 revised to 10-4-40, with approx 52 pages.