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Subject
- Aeronautics.[remove]5
- Airplanes.3
- Airships.3
- Electricity.2
- Ford Three-engined Monoplane (Transport plane)2
- Aerial cinematography--New York (State)--New York.1
- Aerial views.1
- Alps--Description and travel.1
- Bell Telephone Company.1
- Biplanes--Piloting.1
- Eckener, Hugo, 1868-1954.1
- Ford Motor Company.1
- Gliders (Aeronautics)--Design and construction.1
- Graf Zeppelin (Airship)1
- Lucerne (Switzerland)--Description and travel.1
- Radio.1
- Trumbull, John Harper, 1873-1961.1
- Zurich (Switzerland)--Description and travel.1