From: https://commons.wikimedia.org/wiki/File:Perkiomen-Skippack-1893.png Uploaded by John Freed. Last modified over 4 years ago. 5 control points.
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File:Perkiomen-Skippack-1893.png
From: https://commons.wikimedia.org/wiki/File:Perkiomen-Skippack-1893.png Uploaded by John Freed. Last modified over 4 years ago. 5 control points. Links: Wikimedia Commons
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