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Author
Environmental Resources Research Institute
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Access
Public
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Subject
Transportation
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Subject
Railroads
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Year
1996
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1 - 2 of 2
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1. Active Railroads: Pennsylvania
1996. Environmental Resources Research Institute. Location of active rail lines in Pennsylvania, digitized from 1:24,000 USGS topographic maps on a stable mylar base.
2. Inactive Railroads: Pennsylvania
1996. Environmental Resources Research Institute. Location of inactive rail lines in Pennsylvania, digitized from 1:24,000 USGS topographic maps on a stable mylar base.