OF-02-06 Geologic Map of the Fort Garland SW Quadrangle OF-02-06 Geologic Map of the Fort Garland SW Quadrangle, Costilla County, Colorado
OF-02-07 Geologic Map of the Breckenridge Quadrangle OF-02-07 Geologic Map of the Breckenridge Quadrangle, Summit and Park Counties, Colorado
OF-02-13 History OF-02-13 History, Geology, and Environmental Setting of Selected Mines Near Ophir, Uncompahgre National Forest, San Miguel County, Colorado
OF-01-21 Evaluation of Mineral and Mineral Fuel Potential of Larimer County State Mineral Lands Administered by the Colorado State Land Board (detail) OF-01-21 Evaluation of Mineral and Mineral Fuel Potential of Larimer County State Mineral Lands Administered by the Colorado State Land Board
OF-01-19 Evaluation of Mineral and Mineral Fuel Potential of Prowers County State Mineral Lands Administered by the Colorado State Land Board (detail) OF-01-19 Evaluation of Mineral and Mineral Fuel Potential of Prowers County State Mineral Lands Administered by the Colorado State Land Board
OF-01-10 Evaluation of Mineral and Mineral Fuel Potential of Huerfano and Custer Counties State Mineral Lands Administered by the Colorado State Land Board (detail) OF-01-10 Evaluation of Mineral and Mineral Fuel Potential of Huerfano and Custer Counties State Mineral Lands Administered by the Colorado State Land Board
OF-01-18 Evaluation of Mineral and Mineral Fuel Potential of Montezuma and Dolores Counties State Mineral Lands Administered by the Colorado State Land Board (detail) OF-01-18 Evaluation of Mineral and Mineral Fuel Potential of Montezuma and Dolores Counties State Mineral Lands Administered by the Colorado State Land Board
OF-01-15 Evaluation of Mineral and Mineral Fuel Potential of Jackson County State Mineral Lands Administered by the Colorado State Land Board (detail) OF-01-15 Evaluation of Mineral and Mineral Fuel Potential of Jackson County State Mineral Lands Administered by the Colorado State Land Board