USGS1984Geologic map and cross sections of the Carbondale 30' x 60' quadrangle, west-central ColoradoNo abstract available.Colorado↗
USGS1982Geologic map of parts of Bitter Creek Well, Harley Dome, Westwater 4 SE, and Westwater 4 SW quadrangles, Colorado and Utah, showing coal beds in Dakota Sandstone, and adjacent rocksNo abstract available.Colorado, Utah↗