Early 1920s Handwritten Manuscript Explaining the Workings of an Airplane
Early 1920's handwritten manuscript describing the inner workings of an airplane with multiple detailed drawings and descriptions. 14 pages. 5" x 8-1/2". Includes handwritten drawings and journal entries explaining the "general data" including particular speed, weight, etc. of the planes. Drawings include a "main wiring diagram" . The handwritten labels.....