United States Air Force Aircraft Engineering Drawings (Microfilm)

The United States Air Force (USAF) Engineering Drawing Section was established in 1917 to maintain and reproduce engineering data for the USAF. The Drawing Collection was originally developed by the USAF for two major functions: to create a historical record of the equipment operated by the USAF and its predecessors and to provide engineering drawings of current equipment for maintenance operation centers requiring such information. Engineering drawings of then-current equipment and extant engineering drawings for obsolete equipment were microfilmed either by the USAF, by vendors under contract to the USAF, or by the manufactures. Additional microfilm created by or for the United States Navy (USN) covering some aircraft also operated by the USAF were added to the collection.