Wissahickon Formation in Southeastern Chester County, Pennsylvania Permalink: https://digitalcollections.tricolib.brynmawr.edu/object/bmc85992 Item Description Member of Geology Maps Description From Kuhlman,R,Stratigraphy/Metamorphism Wissahickon F.,S-E Chester C, Bryn Mawr 1975. Physical Form Cartographic Map Genre geological maps Date Created 1975-05-12 Temporal Subject Twentieth century Geographic Subject Chester County (Pa.) Language English Extent 1 map : color ; 48 x 30.5 inches Resource Type Still Image Internet Media Type image/tiff Digital Origin reformatted digital Institution Bryn Mawr College Library pbm Department Bryn Mawr College Special Collections Shelf Locator Collier Science Library, Geology Map Collection Local Identifier GIS-00036 PID bmc:85992 Record Content Source pbm Rights Statement IN COPYRIGHT