HM-01-04 1877 Geologic Map of Colorado (Hayden) (detail) HM-01-04 1877 Geologic Map of Colorado (Hayden)
IS-18 Oil and Gas Fields of Colorado: Statistical Data through 1981 IS-18 Oil and Gas Fields of Colorado: Statistical Data through 1981
IS-21 Bibliography and Index of Colorado Geology IS-21 Bibliography and Index of Colorado Geology, 1983
OF-15-11 Geology and Groundwater Resources of Park County OF-15-11 Geology and Groundwater Resources of Park County, Colorado
OF-15-10 Geology and Groundwater Resources of Douglas County OF-15-10 Geology and Groundwater Resources of Douglas County, Colorado
MI-34 Detailed Cross Sections Correlating Upper Cretaceous and Lower Tertiary Rocks between the Uinta Basin of Eastern Utah and Western Colorado and the Piceance Basin of Western Colorado (detail) MI-34 Detailed Cross Sections Correlating Upper Cretaceous and Lower Tertiary Rocks between the Uinta Basin of Eastern Utah and Western Colorado and the Piceance Basin of Western Colorado
MS-24 Metal Mining Activity Map of Colorado and Directory MS-24 Metal Mining Activity Map of Colorado and Directory, 1984