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- United States. Air Force.[remove]6
- Aeronautics.4
- United States. Army. Air Corps.4
- Air mail service--United States.2
- United States Postal Service.2
- Air mail service.1
- Antiaircraft artillery.1
- Arnold, Henry Harley, 1886-1950.1
- Ballooning.1
- Balloons.1
- Brown, Walter F. (Walter Folger), 1869-1961.1
- Douglas DC-2 (Transport plane)1
- Flags--American.1
- Formation flying.1
- Foulois, Benjamin Delahauf, 1879-1967.1
- Lindbergh, Charles A. (Charles Augustus), 1902-1974.1
- Martin airplanes.1
- McCarran, Pat, 1876-1954.1
- Military ceremonies, honors, and salutes--United States.1
- Monoplanes.1