1. Digital bedrock geologic map of the Ashland and the northern part of the Ironwood 30ʹ x 60ʹ quadrangles, Wisconsin and Michigan Author/Creator: Cannon, William F. Publication/Creation: [Denver, Colo.] : [For sale by USGS Information Services (Open-File Report Sales)]. Resource Type: Map Access & Availability: Loading
2. Digital engineering aspects of karst map, a GIS version of Davies, W.E., Simpson, J.H., Ohlmacher, G.C., Kirk, W.S., and Newton, E.G., 1984, Engineering aspects of karst, U.S. Geological Survey, National atlas of the United States of America, scale 1:7,500,000 Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, VA : U.S. Geological Survey, 2004 Resource Type: Map Edition: Version 1.0. Access & Availability: Loading
3. Digital geologic map of Yellowstone National Park, Idaho, Montana, and Wyoming and vicinity Author/Creator: Geological Survey (U.S.) Publication/Creation: [Reston, Va.?] : The Survey, [1999] Resource Type: Map Edition: Online version 1.0, 5 April 1999. Access & Availability: Loading
4. Digital seismic-reflection data from eastern Rhode Island Sound and vicinity, 1975-1980 Author/Creator: McMullen, K. Y. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2009 Resource Type: Map Access & Availability: Loading
5. Digital shaded-relief map of Venezuela Author/Creator: Garrity, Christopher P. Publication/Creation: [Reston, Va.] : U.S. Geological Survey, 2004 Resource Type: Map Edition: Version 1.0. Access & Availability: Loading