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Subjects
- World War, 1914-1918.[remove]7
- Engineers -- Michigan -- Ann Arbor.2
- Aeronautics.1
- Airplanes.1
- Architects.1
- Architecture.1
- Astronomical observatories.1
- Automobile industry and trade -- United States.1
- Automobile industry and trade.1
- Automobiles.1
- Balloon ascensions.1
- Balloons (Aircraft) -- 1910.1
- Barns.1
- Buildings.1
- Business enterprises.1
- Cattle.1
- Churches.1
- Coal mining.1
- Commerce.1
- Construction industry.1