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Subjects
- Photographs shelf.[remove]2
- Abolition movement--United States.1
- Abolitionists--United States.1
- Aerialists--New York (State)--Niagara Falls.1
- African Americans.1
- Agriculture.1
- Airships.1
- Bridges.1
- Emancipation proclamation.1
- Exhibitions.1
- Families--Pennsylvania--Philadelphia--1860-1900.1
- Freedmen--Education.1
- Freedmen--United States--1860-1870.1
- Geological surveys--West (U.S.)1
- Great Fire, Chicago, Ill., 1871.1
- Harbors.1
- Hurricanes--Texas--Galveston--1900.1
- Industry--United States.1
- Lumber industry.1
- Mining--United States.1