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The first man-carrying aeroplane capable of sustained free flight : Langley's success as a pioneer in aviation (1915)

Zahm, Albert Francis, 1862- · Washington : Government Printing Office · leaf 9

An illustration from The first man-carrying aeroplane capable of sustained free flight : Langley's success as a pioneer in aviation, 1915, leaf 9

Langley, S. P. (Samuel Pierpont), 1834-1906 · Airplanes

Internet Archive · Northeastern University, Snell Library · Public domain (published before 1931). Free to use for anything.

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