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Elkton-Wilmington folio ; Maryland-Delaware-New Jersey-Pennsylvania
(Geological Survey (United States), 1920)
Trenton folio, New Jersey-Pennsylvania
(Geological Survey (United States), 1909)
Philadelphia folio : Norristown, Germantown, Chester, and Philadelphia quadrangles, Pennsylvania-New Jersey-Delaware
(Geological Survey (United States), 1909)
Fairfield-Gettysburg folio, Pennsylvania
(Geological Survey (United States), 1929)
Coatesville-West Chester folio, Pennsylvania-Delaware
(Geological Survey (United States), 1932)