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Places
- United States -- Politics and government -- 20th century2
- Ashokan Reservoir (N.Y.)1
- Eklutna Dam (Alaska)1
- Europe -- Ethnic relations -- History -- 20th century1
- Great Lakes (North America) -- Regulation1
- Israel1
- Kingston (N.Y.)1
- New York (N.Y.)1
- New York (State) -- Commerce1
- New York (State) -- Politics and government -- 1865-19501
- New York (State) -- Politics and government -- 1951-1
- New York (State) -- Social life and customs1
- Niagara Falls (N.Y. and Ont.)1
- Niagara Falls (N.Y. and Ont.) -- Regulation1
- Panama Canal (Panama)1
- Saint Lawrence Seaway1
- Ulster County (N.Y.)1
- United States -- Emigration and immigration -- Government policy1