Topical Subjects
- Coal Mines and Mining--Coke Ovens.2
- Coal Mines and Mining--Company Stores and Offices.2
- Coal miners--Dwellings.2
- Coal miners--Education.2
- Coal miners--Kentucky.2
- Coal miners--West Virginia.2
- Coal mines and mining--Exhibitions.2
- Coal preparation plants--Kentucky--Van Lear.2
- Coal preparation plants--West Virginia--Itmann.2
- Coal--Transportation--Kentucky--Jenkins.2
- Coal--Transportation--West Virginia--Fairmont.2
- Coal-fired power plants--Pennsylvania--Elrama.2
- Coke-ovens--West Virginia.2
- Dams.2
- Electric current rectifiers.2
- Electric transformers.2
- Freight cars--Kentucky--Jenkins.2
- Freight cars--West Virginia--Pursglove.2
- Indians of North America--Ohio--Antiquities.2
- Mounds--Ohio.2