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Topical Subjects
- Cities--Morgantown--Pietro Collection--Business and Industry--Beaver Falls, PA.[remove]87
- Pipelines--Pennsylvania--Beaver Falls--Design and construction.70
- Road construction workers--Pennsylvania--Beaver Falls.56
- Roads--Pennsylvania--Beaver Falls--Design and construction.10
- Factories--Pennsylvania--Beaver Falls.4
- Dwellings--Pennsylvania--Beaver Falls.3
- Horse-drawn vehicles--Pennsylvania--Beaver Falls.2
- Manholes--Pennsylvania--Beaver Falls--Design and construction.2
- Railroad tracks--Pennsylvania--Beaver Falls.2
- Sidewalks--Pennsylvania--Beaver Falls--Design and construction.2
- Construction workers--Pennsylvania--Beaver Falls.1
- Ditches--Pennsylvania--Beaver Falls--Design and construction.1
- Roads, Brick--Pennsylvania--Beaver Falls--Design and construction.1
- Steam-engines--Pennsylvania--Beaver Falls.1
- Storage facilities--Pennsylvania--Beaver Falls.1
- Streets--Pennsylvania--Beaver Falls--Design and construction.1
- Surveyors--Pennsylvania--Beaver Falls.1