1. Geologic map of the Bailey 30ʹ by 60ʹ quadrangle, north-central Colorado Author/Creator: Ruleman, C. A. (Chester Allan) Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2011 Resource Type: Map Access & Availability: Loading
2. Geologic map of the Scottsbluff 1⁰ x 2⁰ quadrangle, Nebraska and Colorado Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : U.S. Geological Survey Information Services [distributor]. Resource Type: Map Access & Availability: Loading
3. Geologic map of the Upper Arkansas River Valley Region, North-Central Colorado Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Virginia] : U.S. Geological Survey, 2017 Resource Type: Map Access & Availability: Loading
4. Geologic studies of the Platte River, south-central Nebraska and adjacent areas, geologic maps, subsurface study, and geologic history Author/Creator: Condon, Steven M. Publication/Creation: [Reston, Va.?] : U.S. Geological Survey ; Denver, CO : Information Services [distributor], 2005 Resource Type: Map Edition: Version 1.0. Access & Availability: Loading
5. Geologic studies of the Platte River, south-central Nebraska and adjacent areas--geologic maps, subsurface study, and geologic history Author/Creator: Condon, Steven M. Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2005 Resource Type: Book Edition: Version 1.0. Access & Availability: Loading
6. Geology and hydrology of the deep bedrock aquifers in eastern Colorado Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : Department of the Interior, U.S. Geological Survey, 1987 Resource Type: Map Access & Availability: Loading