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Subject
- Aeronautics--Australia.1
- Aeronautics--Records.1
- Aeronautics--United States.1
- Aeronautics.3
- Air pilots--United States.1
- Air pilots.2
- Airplanes.2
- Airships.2
- Coolidge, Calvin, 1872-1933.1
- Doolittle, James Harold, 1896-1993.1
- Endurance flights.1
- Families.1
- Graf Zeppelin (Airship)1
- Hangars.1
- Helmets.1
- Horner, Henry, 1878-1940.1
- Lockheed Aircraft Corporation.1
- Lockheed aircraft.1
- Los Angeles (Airship)1
- National Tuberculosis Association.1