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County Map of Pennsylvania, New Jersey, Maryland, and Delaware (Inset - Baltimore and Philadelphia) - Barry Lawrence Ruderman Antique Maps Inc.
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Vermont - New York - Pennsylvania - New Jersey Map Labelled Black Stock Illustration - Illustration of labels, counties: 85340986
County map of Pennsylvania, New Jersey, Maryland and Delaware ; City of Philadelphia [inset]; City of Baltimore [inset]. - NYPL Digital Collections
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File:1756 Lotter Map of Eastern Pennsylvania, & New Jersey cropped from Geographicus-1756.jpg - Wikimedia Commons
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