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Subject
- Aeronautics, Military.[remove]13
- Biplanes.[remove]13
- United States. Army. Air Corps.8
- Bombers.7
- Smoke screens.5
- Airplanes.3
- Formation flying.3
- Military art and science.3
- Aeronautics--Study and teaching.2
- Hines, John Leonard, 1868-1968.2
- Aeronautics.1
- Airplanes, Military.1
- Airplanes--Formation flying.1
- Great Britain. Royal Air Force.1
- Lexington Class (Aircraft carriers)1
- Motion picture journalism--United States--History.1
- Movietonews (Firm)1
- Parachute troops.1
- Parachutes.1
- Parachuting.1