Subjects
- Elections1
- Farms and farming.1
- Federal Coal Mine Health and Safety Act 1969.1
- Health services.1
- Hospitals and hospital records.1
- Hospitals and sanitariums.3
- Lungs -- Dust diseases1
- Medicine. SEE ALSO Folk medicine.2
- New Deal, 1933-19391
- Physicians - letters and papers.2
- Politicians -- United States1
- Politics and government.1
- Rivers and river valleys.1
- Silicosis1
- Union names.2