1965. 2017-12-15T14:48:31Z. 2017-12-15T14:48:31Z. United States. Army Map Service. Geological Survey. English. cartographic image. Public. Pennsylvania and Pennsylvania.
1966. 2017-12-15T14:40:58Z. 2017-12-15T14:42:18Z. United States. Army Map Service. Geological Survey. English. cartographic image. Public. Wilmington (Del.), Pennsylvania, New Jersey, Maryland, Delaware, Wilmington., Maryland., New Jersey., and Pennsylvania.