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1907. United States. Geological Survey. This is a scanned historical map of the Clarion Quadrangle in Pennsylvania shown at a scale of 1:62,500. This map was created by the US Geological ... US Geological Survey.
1903. United States. Geological Survey. This is a scanned historical map of the Rural Valley Quadrangle in Pennsylvania shown at a scale of 1:62,500. This map was created by the US Geolog... US Geological Survey.
1996. Federal Emergency Management Agency. Q3 flood data for Pennsylvania, 1996. The Q3 Flood Data are derived from the Flood Insurance Rate Maps (FIRMs) published by the Federal Emergency M... Federal Emergency Management Agency.