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Subject
- Social conditions4
- Crommelin, Claude August, 1840-18743
- Description and travel3
- Economic conditions3
- Reconstruction (U.S. history, 1865-1877)3
- Travel3
- Black Diamond Anthracite Coal Company1
- Emigration and immigration1
- Knights of Labor1
- Labor and laboring classes1
- Labor unions1
- Powderly, Terence Vincent, 1849-19241
- United States. Bureau of Immigration1