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Topical Subjects
- Cities--Morgantown--Pietro Collection--Business and Industry--Beaver Falls, PA.87
- Cities--Morgantown--Pietro Collection--Business and Industry--Ritchie County.18
- Cities--Morgantown--Pietro Collection--Business and Industry--Williamson.32
- Cities--Morgantown--Pietro Collection--Business and Industry.16
- Cities--Morgantown--Pietro Collecton--Portraits.1
- Construction workers--Pennsylvania--Beaver Falls.1
- Ditches--Pennsylvania--Beaver Falls--Design and construction.1
- Dwellings--Pennsylvania--Beaver Falls.3
- Dwellings--West Virginia--Morgantown.3
- Dwellings--West Virginia--Ritchie County.2
- Dwellings--West Virginia--Williamson.3
- Factories--Pennsylvania--Beaver Falls.4
- Formations (Geology)--West Virginia--Williamson.1
- Freight cars--West Virginia--Ritchie County.2
- Freight cars.1
- Horse-drawn vehicles--Pennsylvania--Beaver Falls.2
- Horse-drawn vehicles--West Virginia--Williamson.4
- Loading and unloading--West Virginia--Ritchie County.2
- Manholes--Pennsylvania--Beaver Falls--Design and construction.2
- Pipelines--Pennsylvania--Beaver Falls--Design and construction.70