1. Geologic map of Great Sand Dunes National Park, Colorado Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2016 Resource Type: Map Access & Availability: Loading
2. Distribution of late Quaternary wind-deposited sand in eastern Colorado Author/Creator: Geological Survey (U.S.) Publication/Creation: [Reston, VA] . : U.S. Dept. of the Interior, U.S. Geological Survey, 2005 Resource Type: Map Edition: Version 1.0. Access & Availability: Loading
3. Geologic map of the Hygiene quadrangle, Boulder County, Colorado Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Information Services Resource Type: Map Access & Availability: Loading
4. Surficial geologic map of the Steamboat Springs 30ʹ x 60ʹ quadrangle, Grand, Jackson, and Routt counties, Colorado Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
5. Surficial geologic map of the Walden 30ʹ x 60ʹ quadrangle, Jackson, Larimer, and Routt counties, Colorado Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading