OF-00-01 Geologic Map of the Jack Hall Mountain Quadrangle OF-00-01 Geologic Map of the Jack Hall Mountain Quadrangle, Fremont County, Colorado
OF-00-02 Geologic Map of the Idaho Springs Quadrangle OF-00-02 Geologic Map of the Idaho Springs Quadrangle, Clear Creek County, Colorado
OF-00-03 Geologic Map of the Colorado Springs Quadrangle OF-00-03 Geologic Map of the Colorado Springs Quadrangle, El Paso County, Colorado
OF-00-12 Demonstrated Reserve Base for Coal in Colorado: Yampa Coal Field OF-00-12 Demonstrated Reserve Base for Coal in Colorado: Yampa Coal Field
OF-99-18 History OF-99-18 History, Geology, and Environmental Setting of Selected Mines near Creede, Rio Grande National Forest, Mineral County, Colorado
OF-00-04 Geologic Map of the Hesperus Quadrangle OF-00-04 Geologic Map of the Hesperus Quadrangle, La Plata and Montezuma Counties, Colorado
OF-00-10 History OF-00-10 History, Geology, and Environmental Setting of the Lower Fair Day Mine, Arapaho/Roosevelt National Forest, Boulder County, Colorado
RS-39 Gas Production Characteristics of the Rulison RS-39 Gas Production Characteristics of the Rulison, Grand Valley, Mamm Creek, and Parachute Fields
IS-49 Reconnaissance Field Investigation of Surface-Water Specific Conductance in the Snowmass-Glenwood Springs Area IS-49 Reconnaissance Field Investigation of Surface-Water Specific Conductance in the Snowmass-Glenwood Springs Area, West-Central Colorado