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Flying-machines — Audiobooks
Flying Machines Today
by William D. (William Duane) Ennis
Side-Lights on Astronomy and Kindred Fields of Popular Science
by Simon Newcomb
Flying Machines: Construction and Operation A Practical Book Which Shows, in Illustrations, Working Plans and Text, How to Build and Navigate the Modern Airship
by William J. (William James) Jackman, Octave Chanute, Thomas Herbert Russell