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Places
- Niagara Falls (N.Y. and Ont.)[remove]2
- Eklutna Dam (Alaska)1
- Europe -- Ethnic relations -- History -- 20th century1
- Great Lakes (North America) -- Regulation1
- Harford County (Md.)1
- Niagara Falls (N.Y. and Ont.) -- Regulation1
- Saint Lawrence Seaway1
- Sheffield (Mass. : Town)1
- United States -- Emigration and immigration -- Government policy1
- United States -- History -- Civil War, 1861-18651
- United States -- Politics and government -- 20th century1