Flying Machines with Paddling Wings, by Andre Delprat. London, 1904.
Manual of Military Ballooning. London, by Authority, 1905.
Resistance of the Air and the Question of Flying, by Arnold Samuelson. Hamburg, 1905.
Navigating the Air. Published by the Aero Club of America. New York, 1907.
Flying Machines: Past, Present, and Future, by A. W. Marshall and H. Greenly. London, 1907. (?)
A History of Balloons and Flying Machines, by Lord Montagu. London, 1907.
Pocketbook of Aeronautics, by Major H. Moedebeck. London, 1907. One of the most valuable reference works on the subject that has been compiled.
The Problem of Flight, by Herbert Chatley. London, 1907.
Aerial Flight: Aerodynamics, by F. W. Lanchester. London, 1907.
Aerial Locomotion, by A. Graham Bell. Washington, 1907.