1. Hydrogeologic unit map of the Piedmont and Blue Ridge Provinces of North Carolina Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Raleigh, North Carolina : Department of the Interior, U.S. Geological Survey, 1990 Format: Map Access & Availability: Loading
2. Hydrogeology of the valley-fill aquifer at Owego, Tioga County, New York Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Albany, New York : U.S. Department of the Interior, U.S. Geological Survey, 1990 Format: Map Access & Availability: Loading