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Topical Subjects
- Cities--Morgantown--Pietro Collection--Business and Industry--Beaver Falls, PA.88
- Pipelines--Pennsylvania--Beaver Falls--Design and construction.71
- Road construction workers--Pennsylvania--Beaver Falls.59
- Cities--Morgantown--Pietro Collection--Business and Industry--Williamson.32
- Roads--West Virginia--Williamson--Design and construction.28
- Road construction workers--West Virginia--Williamson.23
- Cities--Morgantown--Pietro Collection--Business and Industry--Ritchie County.18
- Cities--Morgantown--Pietro Collection--Business and Industry.16
- Roads--Pennsylvania--Beaver Falls--Design and construction.12
- Roads--West Virginia--Ritchie County--Design and construction.9
- Road construction workers--West Virginia--Ritchie County.8
- Road machinery--West Virginia--Ritchie County.7
- Roads--West Virginia--Ritchie County.7
- Cities--Morgantown--Pietro Collecton--Portraits.6
- Road construction workers--West Virginia--Morgantown.5
- Road machinery--West Virginia--Williamson.5
- Roads, Brick--West Virginia--Williamson--Design and construction.5
- Factories--Pennsylvania--Beaver Falls.4
- Horse-drawn vehicles--West Virginia--Williamson.4
- Roads--Design and construction.4