These manuals are a must-have for anyone interested in the maintenance of aircraft engines. Written by Brimm and Boggess in 1939 and 1940, it covers a wide range of aircraft types and provides comprehensive information on how to maintain them. Whether you are a professional mechanic or a hobbyist, this manual is an invaluable resource that will help you understand the intricacies of aircraft engine maintenance.

The manual is categorized under eBay Motors and Parts & Accessories, specifically under Manuals & Literature and Aviation. It is suitable for anyone interested in the topic of aircraft maintenance and engine maintenance. With its detailed information and historical significance, this manual is a valuable addition to any collection.

Both books are in used condition and show some signs of their age see pictures for more details