Subjects
- Railroads[remove]109
- Politics and government.25
- Coal mining.24
- Lawyers - letters and papers.20
- Transportation19
- Railroads - Baltimore and Ohio Railroad.16
- Account books14
- Rivers and river valleys.12
- Lumber trade11
- Judges - letters and papers.9
- Coal mining - coal companies.8
- Diaries and journals.8
- Elections8
- Petroleum industry and trade8
- Politicians -- United States7