Map of Quarry in the Baltimore Gneiss, Ithan Avenue north of Roberts Road Permalink: https://digitalcollections.tricolib.brynmawr.edu/object/bmc86118 Item Description Member of Geology Maps Description From Benedict, D., Map of Quarry in the Baltimore Gneiss, Bryn Mawr. Physical Form Cartographic Map Genre geological maps Temporal Subject Twentieth century Geographic Subject Pennsylvania Language English Extent 1 map : color ; 10.75 x 14.75 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-00163 PID bmc:86118 Record Content Source pbm Rights Statement COPYRIGHT UNDETERMINED