Subjects
- Dental care1
- Dentists1
- Drugs and druggists.1
- Federal Coal Mine Health and Safety Act 1969.1
- Health services.1
- Hospitals and hospital records.1
- Hospitals and sanitariums.1
- Labor unions1
- Lungs -- Dust diseases1
- Medicine. SEE ALSO Folk medicine.1
- Physicians - letters and papers.1
- Silicosis1
- Union names.2
- Unions - National Miners Union.1
- Unions - Progressive Mine Workers of America.1