Zahm, Albert Francis, 1862-1954

Aërial Navigation A Popular Treatise on the Growth of Air Craft and on Aëronautical Meteorology
The First Man-Carrying Aeroplane Capable of Sustained Free Flight: Langley's Success as a Pioneer in AviationFrom the Smithsonian Report for 1914, pages 217-222, Publication 2329, 1915

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