Subjects
- Coal mining.[remove]39
- Railroads18
- Politics and government.16
- Account books14
- Coal mining - coal companies.10
- Lumber trade10
- Lawyers - letters and papers.8
- Elections7
- Farms and farming.7
- Genealogy7
- Petroleum industry and trade7
- Gas industry6
- Mills and mill-work6
- Coal mining -- Strikes5
- Iron furnaces and iron industry.5