1. Hydrology of Lake Panasoffkee, Sumter County, Florida Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : Department of the Interior, United States Geological Survey, 1977 Resource Type: Map Access & Availability: Loading
2. Maps showing ground-water conditions in the southern part of the Black Mesa area, Navajo, Apache, and Coconino counties, Arizona--1976 Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Tucson, Ariz.] : Department of the Interior, United States Geological Survey, 1977 Resource Type: Map Access & Availability: Loading