OF-20-06 Geologic Map of the Kersey Quadrangle, Weld County, Colorado

OF-21-01 Geologic Map of the Barnesville Quadrangle, Weld County, Colorado

OF-21-04 Geologic Map of the Hardin Quadrangle, Weld County, Colorado

OF-18-01 Geologic Map of the Frederick Quadrangle, Weld and Broomfield Counties, Colorado

OF-17-03 Geologic Map of the Berthoud Quadrangle, Larimer, Weld, and Boulder Counties, Colorado

OF-16-05 Geologic Map of the Longmont Quadrangle, Boulder and Weld Counties, Colorado

RS-42 Geology and Mineral Resources of Lake County, Colorado

RS-44 Geology and Mineral Resources of Saguache County, Colorado

RS-40 Geology and Mineral Resources of Park County, Colorado

RS-37 Geology and Mineral Resources of Gunnison County, Colorado