1. Altitude and configuration of the potentiometric surface in part of Lower Oxford, East Nottingham, and West Nottingham Townships, and in part of the Borough of Oxford, Chester County, Pennsylvania, April through June, 2003 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Reston, Va. : U.S. Department of the Interior, U.S. Geological Survey, 2005 Resource Type: Map Access & Availability: Loading
2. Altitude and configuration of the potentiometric surface in the upper White Clay Creek and lower West Branch Brandywine Creek basins including portions of Penn, London Grove, New Garden, Londonderry, West Marlborough, Highland, and East Fallowfield Townships and West Grove, Avondale, Modena, and South Coatesville Boroughs, Chester County, Pennsylvania, May through July 2006 Author/Creator: Hale, Lindsay B. Publication/Creation: [Reston, Va.?] : U.S. Geological Survey, 2007 Resource Type: Map Access & Availability: Loading