Designing seaplane hulls and floats
A 1926 NASA Technical Memorandum page of photographs showing seaplanes and their parts, issued for aeronautical engineers and researchers. The page is a scanned sheet of several small photographs with typed captions, showing a biplane seaplane in flight, a float hull, and a bow view of a hull in a test setting. A designer could take from it the simple layout of captioned photo plates used in technical reports and the strong contrast of black aircraft shapes on pale paper.
