1. Geologic map of the central San Juan Caldera Cluster, southwestern Colorado / by Peter W. Lippman. Lipman, Peter W. [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2006. Map Online
2. Stratigraphy of the upper Cretaceous Mancos Shale (upper part) and Mesaverde group in the southern part of the Uinta and Piceance Basins, Utah and Colorado [electronic resource] / by R.D. Hettinger and M.A. Kirschbaum ; U.S. Department of the Interior, U.S. Geological Survey. Hettinger, Robert D. [Reston, Va.?] : U.S. Geological Survey, [2002] Map Online
3. Map showing the extent of mining, locations of mine shafts, adits, air shafts, and bedrock faults, and thickness of overburden above abandoned coal mines in the Boulder-Weld Coal Field, Boulder, Weld, and Adams counties, Colorado / U.S. Department of the Interior, U.S. Geological Survey ; compiled by S.B. Roberts, J.L. Hynes, and C.L. Woodward ; prepared in cooperation with the Colorado Geological Survey. Geological Survey (U.S.) [Reston, Va.?] : The Survey, 2001. Map Online
4. Geologic map of the Proterozoic rocks of the central Front Range, Colorado / U.S. Department of the Interior, U.S. Geological Survey ; by Dolores J. Gable. Geological Survey (U.S.) [Reston, Va.?] : The Survey, 2000. Map Physical Online Lewis Library Loading...
5. Geologic map of the Wolcott quadrangle, Eagle County, Colorado / by David J. Lidke ; U.S. Department of the Interior, U.S. Geological Survey. Lidke, David J. [Reston, Va.] : U.S. Geological Survey, 2000. Map Online
6. Geologic map of the Lazy Y Point quadrangle, Moffat County Colorado / by R.E. Van Loenen, Gary Selner, and W. Anthony Bryant. Van Loenen, Richard E. [Reston, Va.] : U.S. Dept. of the interior, U.S. Geological Survey, 1999. Map Online
7. Geologic map of the Skull Creek quadrangle, Moffat County Colorado / by R.E. Van Loenen and W. Anthony Bryant. Van Loenen, Richard E. [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 1999. Map Online
8. Evolution of the landscape along the Clear Creek corridor, Colorado, urbanization, aggregate mining and reclamation / U.S. Department of the Interior, U.S. Geological Survey ; by Belinda Arbogast ... [and others]. Geological Survey (U.S.) [Reston, Va.?] : U.S. Geological Survey, ; Denver, CO : Information Services [distributor], 2002. Map Physical ReCAP Map
9. Geologic and aeromagnetic maps of the Fossil Ridge area and vicinity, Gunnison County, Colorado / U.S. Department of the Interior, U.S. Geological Survey ; by Ed DeWitt [and others]. Geological Survey (U.S.) [Reston, Va.?] : U.S. Geological Survey ; Denver, CO : Information Services [distributor], 2002. Map Physical ReCAP Map
10. Stratigraphy of the upper Cretaceous Mancos Shale (upper part) and Mesaverde group in the southern part of the Uinta and Piceance Basins, Utah and Colorado / by R.D. Hettinger and M.A. Kirschbaum ; U.S. Department of the Interior, U.S. Geological Survey. Hettinger, Robert D. [Reston, Va.?] : U.S. Geological Survey, [2002] Map Physical ReCAP Map
11. Geologic map of Colorado National Monument and adjacent areas, Mesa County, Colorado / U.S. Department of the Interior, U.S. Geological Survey ; by Robert D. Scott [and others] ; prepared in cooperation with the National Park Service and the Colorado National Monument Association. Geological Survey (U.S.) Reston, Va. : The Survey ; Denver, CO : Information Services [distributor], 2001. Map Physical ReCAP MAP
12. Historic trail map of the Trinidad 1⁰ x 2⁰ quadrangle, southern Colorado / U.S. Department of the Interior, U.S. Geological Survey ; by Glenn R. Scott ; prepared in cooperation with the Denver Public Library, Western History and Genealogy Department. Geological Survey (U.S.) [Reston, Va.?] : The Survey ; Denver, CO : Information Services [distributor], 2001. Map Physical ReCAP Map
13. Geologic map of the Proterozoic rocks of the central Front Range, Colorado / U.S. Department of the Interior, U.S. Geological Survey ; by Dolores J. Gable. Geological Survey (U.S.) [Reston, Va.?] : The Survey, 2000. Map Physical ReCAP Map
14. Geologic map of the Silverton and Howardsville quadrangles, southwestern Colorado / U.S. Department of the Interior, U.S. Geological Survey ; by Robert G. Luedke and Wilbur S. Burbank. Geological Survey (U.S.) Reston, VA : The Survey ; Denver, CO : Information Services [distributor], 2000. Map Physical ReCAP Map
15. Map and description of the active part of the Slumgullion Landslide, Hinsdale County, Colorado / U.S. Department of the Interior, U.S. Geological Survey ; by Robert W. Fleming [and others]. Geological Survey (U.S.) Reston, Va. : U.S. Department of the Interior, U.S. Geological Survey ; Denver, CO : For sale by the USGS Information Services, 1999. Map Physical ReCAP Map
16. Correlation of the Middle Jurassic San Rafael Group from Bluff, Utah, to Cortez, Colorado / U.S. Department of the Interior, U.S. Geological Survey ; by Robert B. O'Sullivan. Geological Survey (U.S.) [Reston, Va.?] : The Survey ; Denver, CO : For sale by U.S. Geological Survey Information Services, 1997. Map Physical ReCAP Map