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Administrative and political boundaries
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Princeton
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Pennsylvania
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1. Pennsylvania: Clarion Quadrangle, 1938 reprint
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.
2. Pennsylvania: Rural Valley Quadrangle, 1939 reprint
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.
3. Pennsylvania: (Venango County) Franklin Quadrangle.
1911. United States. Geological Survey. This is a scanned historical map of the Franklin Quadrangle in Pennsylvania shown at a scale of 1:62,500. This map was created by the US Geological... US Geological Survey.
4. Pennsylvania: Zelienople Quadrangle, 1944 reprint
1910. United States. Geological Survey. This is a scanned historical map of the Zelienople Quadrangle in Pennsylvania shown at a scale of 1:62,500. This map was created by the US Geologic... US Geological Survey.