Base map of Pennsylvania, 1975 / cartography by John G. Kuchinski and Virginia M. Milewski.
"Base map prepared from U.S. Geological Survey United States Series of Topographic Maps ... scale 1:250,000." Shows roads, railroads, rivers, administrative boundaries, etc.
- Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey
- Held by
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