Subjects
- Coal mining.[remove]25
- Politics and government.12
- Railroads11
- Lumber trade8
- Account books6
- Lawyers - letters and papers.6
- Elections5
- Petroleum industry and trade5
- Agriculture 4
- Coal mining - coal companies.4
- Gas industry4
- Genealogy4
- Iron furnaces and iron industry.4
- Politicians -- United States4
- Rivers and river valleys.4