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Topical Subjects
- Coal trade.[remove]74
- Coal Mines and Mining--Consolidation Coal Company--Inspection Trip, 1948.48
- Coal Mines and Mining--Portraits--Group.18
- Coal miners.5
- Coal mines and mining.4
- Coal Mines and Mining--Pocahontas Operators Association.3
- Coal Mines and Mining--Mine Facilities.2
- Coal Mines and Mining--Progressive Miners Of America--Ozanic Collection.2
- Mine railroads--Cars.2
- Coal Mines and Mining--Trevey Collection.1
- Coal miners--Dwellings.1
- Coal miners--Education.1
- Coal mines and mining--Pennsylvania--Somerset.1
- Coal preparation plants.1
- Community centers.1
- Golf courses.1
- Post office buildings.1
- Pullman cars.1