https://creativecommons.org/publicdomain/zero/1.0/ https://www.rawpixel.com/image/431544 Aeronautics - Aerial Machines from the book New Popular Educator (1904), a vintage collection of early aerial machines.…

Aeronautics - Aerial Machines from the book New Popular Educator (1904), a vintage collection of early aerial machines. Digitally enhanced from our own original plate.

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