Flight — Audiobooks
Der Vogelflug als Grundlage der Fliegekunst Ein Beitrag zur Systematik der Flugtechnik
by Otto Lilienthal
Artificial and Natural Flight
by Hiram S. (Hiram Stevens) Maxim
Langley Memoir on Mechanical Flight, Parts I and II Smithsonian Contributions to Knowledge, Volume 27 Number 3, Publication 1948, 1911
by S. P. (Samuel Pierpont) Langley, Charles M. (Charles Matthews) Manly
Birds in Flight
by W. P. (William Plane) Pycraft