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You searched for: Genre Geospatial data Remove constraint Genre: Geospatial data Creator United States Geological Survey (USGS) Remove constraint Creator: United States Geological Survey (USGS) Subject Imagery and Base Maps Remove constraint Subject: Imagery and Base Maps Place Pennsylvania Remove constraint Place: Pennsylvania
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1. Historic topographic maps for Pennsylvania

2005. United States Geological Survey (USGS). Historic USGS 15 minute topographic maps for Pennsylvania as collected from the MapTech Historical Map Collection at '. Scanned map images from Map...