Aside from all the foreign types that were put through their paces, a number of domestic designs could also be found at Langley in the Summer of '17... including the ubiquitous Curtiss JN-4 Jenny. And here's a couple'a shots of one such machine. In the first view the aircraft is fitted with an experimental 'Olmstead Propeller', while in the second view it has a standard prop.
Library of Congress
Library of Congress
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