Subjects
- Coal mining.[remove]26
- Politics and government.13
- Railroads12
- Lumber trade9
- Account books6
- Lawyers - letters and papers.6
- Petroleum industry and trade6
- Elections5
- Agriculture 4
- Coal mining - coal companies.4
- Gas industry4
- Genealogy4
- Iron furnaces and iron industry.4
- Politicians -- United States4
- Rivers and river valleys.4