Mines and prospects, Lawson-Dumont-Fall River District, Clear Creek County, Colorado /
Hawley, C.C. and Moore Frank Baker,
Mines and prospects, Lawson-Dumont-Fall River District, Clear Creek County, Colorado / United States Department of the Interior Geological Survey. C.C. Hawley and Frank Baker Moore. - 115 pages :
Mining--Colorado.
Colorado--Mining.
Mines and prospects, Lawson-Dumont-Fall River District, Clear Creek County, Colorado / United States Department of the Interior Geological Survey. C.C. Hawley and Frank Baker Moore. - 115 pages :
Mining--Colorado.
Colorado--Mining.