From: https://commons.wikimedia.org/wiki/File:Admiralty_Chart_No_2843_Chesapeake... Uploaded by Kognos. Last modified about 2 months ago. 8 control points.
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File:Admiralty Chart No 2843 Chesapeake Bay Entrance, Published 1914, Large Corrections 1961.jpg
From: https://commons.wikimedia.org/wiki/File:Admiralty_Chart_No_2843_Chesapeake... Uploaded by Kognos. Last modified about 2 months ago. 8 control points. Links: Wikimedia Commons
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