Laxmi Bachanalaya
Legally available public-domain books and openly licensed reading materials.
Willis J. Abbot
Charles Amory Beach
Frederick Arthur Ambrose Talbot
Harry Vissering
Alan Bott
Laurence Yard Smith
Carroll Dana Winslow
Claude Grahame-White and Harry Harper
James Norman Hall
E. N. Fales
Eric Stuart Bruce
Edgar Charles Middleton
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United States. War Department. Division of Military Aeronautics
Noel Sainsbury
These books are free to read. Each is in the public domain in the United States; check your own country's rules before you copy or share one.