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- African American engineers.1
- Allied Forces.1
- Allied Powers (1919- )--History.1
- Armies.1
- Audio-visual education--United States.1
- Education, Elementary.1
- Electric generators.1
- Engineers.1
- Fire engines.1
- Fire extinction.1
- Fire fighters--New York (State)--New York.1
- Forecasting.1
- Gibbons, Floyd Phillips, 1887-1939.1
- Hydraulic engineering.1
- International relations.1
- Journalism--History.1
- Machinery.1
- Moses, Robert, 1888-1981.1
- New York (N.Y.)--Buildings, structures, etc.1
- New York (N.Y.)--Social life and customs--20th century.1