11. Surficial geologic map of the Spirit Mountain SE and part of the Spirit Mountain NE 7.5' quadrangles, Nevada and Arizona Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2020 Resource Type: Map Access & Availability: Loading
12. Surficial geology of the northern San Luis Valley, Saguache, Fremont, Custer, Alamosa, Rio Grande, Conejos, and Costilla Counties, Colorado Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va,] : U.S. Department of the Interior, U.S. Geological Survey, 2021 Resource Type: Map Access & Availability: Loading