1. Ground-water levels in the Cockeysville marble of southern Chester County, Pennsylvania, 1983-84 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Reston, Virginia : United States Department of the Interior, Geological Survey, 1985 Resource Type: Map Access & Availability: Loading
2. Ground-water levels in the lower Paleozoic and Precambrian crystalline rocks, of East Bradford and West Bradford townships, Chester County, Pennsylvania, July and August 1987 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1988 Resource Type: Map Access & Availability: Loading
3. Ground-water levels in the lower Paleozoic and Precambrian crystalline rocks, southeastern Chester County, Pennsylvania, July and August 1986 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : United States Department of the Interior, Geological Survey, 1987 Resource Type: Map Access & Availability: Loading
4. Ground-water levels in the Lower Paleozoic carbonate rocks of western Chester Valley, Chester County, Pennsylvania, November 1984 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : United States Department of the Interior, Geological Survey, 1985 Resource Type: Map Access & Availability: Loading