Subjects
- Coal - Rembrandt Peale Mines.1
- Coal - Springfield Coal Corp.1
- Coal mining - Carrolltown Coal Company.1
- Coal mining - Cherry Tree Coal Company.1
- Coal mining - Estep Brothers Coal Mining Company.1
- Coal mining - Labor organization.1
- Coal mining - Mechanization.1
- Coal mining - Safety.1
- Coal mining - coal companies.2
- Coal mining - disasters.1
- Coal mining -- Strikes1
- Coal mining.4
- Compromise of 18501
- Correspondence2
- Diaries1