1. Geohydrology of the High Plains Aquifer system, Cheyenne urban area, Wyoming, 1991 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Cheyenne, Wyoming : U.S. Department of the Interior, U.S. Geological Survey, 1994 Format: Map Access & Availability: Loading
2. Ground-water levels and flow in the vicinity of Wright-Patterson Air Force Base, Ohio, October - December 1987 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Columbus, Ohio : U.S. Department of the Interior, U.S. Geological Survey, 1992 Format: Map Access & Availability: Loading