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Subject
- Aeronautics, Military.[remove]5
- Military art and science.3
- Airplanes.2
- Lexington Class (Aircraft carriers)2
- United States. Army. Air Corps.2
- United States. Navy.2
- Antiaircraft artillery.1
- Biplanes.1
- Curtiss aircraft.1
- Dive bombers.1
- Douglas Aircraft Company.1
- Drill and minor tactics.1
- Glenn L. Martin Company.1
- Hirohito, Emperor of Japan, 1901-1989.1
- Hoover, Herbert Charles, 1903-1969.1
- Hoover, Herbert, 1874-1964--Family.1
- Lexington (Aircraft carrier : 1927-1942)1
- Military weapons.1
- Naval aviation.1
- Railway artillery.1