Subject
- Von Wiegand, Karl H.2
- Wilkins, George H. (George Hubert), Sir, 1888-1958.2
- Aeronautics, Commercial.1
- Aeronautics--History.1
- Aeronautics--Records.1
- Aeronautics--United States.1
- Air mail service.1
- Airplanes.1
- Airships--Accidents.1
- Aviation.1
- Construction + architecture.1
- Construction workers.1
- Families of military personnel.1
- Families.1
- Flights around the world.1
- German language.1
- Germany--Relations--United States--History.1
- Germany--Relations--United States.1
- Glider pilots.1
- Gliders (Aeronautics)1