Engine Manuals
- Armstrong Siddeley
- Bentley
- Garrett-Airesearch
- Nelson
- Pratt & Whitney
- Smith Compressors
- United Aircraft of Canada Limited
- Allison
- Cirrus
- Continental
- Curtiss-Wright
- D. W. Onan
- DeHavilland
- Fairchild
- Franklin
- Garrett
- General Electric Company
- General Motors
- Gnome Engine-Le Rhone
- Hispano Engines
- International Nickel Company
- Jacobs
- Ken Royce
- Kinner Motors Inc
- Lambert
- Leblond
- Liberty Engines
- Lycoming
- McCulloch Motors
- Menasco Manufacturing Company