Subjects
- Coal mining - Labor organization.1
- Coal mining - Safety.1
- Coal mining - disasters.1
- Coal mining.[remove]2
- Compromise of 18501
- Election of 1848.1
- Election of 1868.1
- Immigration.1
- Lawyers - letters and papers.1
- Lumber trade1
- Maps.1
- Monongah Mines Disaster, Monongah, W. Va., 19071
- Petroleum industry and trade1
- Politics and government.1
- Railroads1