This incredible WWII stock blueprint shows the infamous Army Navy summer flying helmet. This original stock blueprint was used for the stock and inventory distribution of the summer flying helmet for WWII pilots and crew. This stock blueprint comes from the Engineering Department of the Spartan Aircraft Company in Tulsa, Oklahoma. The Spartan Aircraft Company expanded aircraft manufacturing and, aside from complete aircraft, produced thousands of subassemblies for use in aircraft such aircraft as the B-24 Liberator, B-29 Superfortress, and the P-38 Lightning. Branches of the Spartan ...
