Die Luftschiffahrt der Gegenwart

Aeolus; or, the future of the flying machine

Aircraft

Aircraft and Submarines The Story of the Invention, Development, and Present-Day Uses of War's Newest Weapons

Animal Locomotion; or, walking, swimming, and flying With a dissertation on aëronautics

Artificial and Natural Flight

Aviation in Peace and War

Aërial Navigation A Popular Treatise on the Growth of Air Craft and on Aëronautical Meteorology

Balloons, Airships, and Flying Machines

Der Vogelflug als Grundlage der Fliegekunst Ein Beitrag zur Systematik der Flugtechnik

Dirigible Balloons