Other
- Socialism 4 results
- Wages 3 results
- Economic conditions 2 results
- Anthracite coal 1 results
- Capitalism 1 results
- Coal trade 1 results
- Cost and standard of living 1 results
- Democracy 1 results
- Economic history 1 results
- Economics 1 results
- History 1 results
- Income 1 results
- Labor and laboring class 1 results
- Labor and laboring classes 1 results
- Monopolies 1 results
- Peace 1 results
- Poetry 1 results
- Politics and government 1 results
- Revolutions 1 results
- Social history 1 results
- Social problems 1 results
- Social structure 1 results
- Trusts, Industrial 1 results
- World War, 1914-1918 1 results