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22. Anthracite
1893. 2011-12-12T21:24:22Z. 2022-03-29T20:39:05Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Colorado.
1894. 2013-03-13T13:42:05Z. 2013-03-13T13:42:05Z. Emmons, Samuel Franklin, 1841-1911. The Survey. English. Public. Colorado and Gunnison County.
1912. 2013-03-14T19:07:18Z. 2013-03-14T19:07:18Z. Stose, George Willis, 1869-1960. U.S. Geological Survey. English. Public. Colorado and États-Unis.
1997. 2002-06-01T04:00:00Z. 2009-01-12T16:52:49Z. United States. Forest Service. Rocky Mountain Region. U.S. Forest Service, Rocky Mountain Region. English. Public. Colorado, Arapaho National Forest (Colo.), and Roosevelt National Forest (Colo.).
1918. 2018-07-30T17:49:34Z. 2018-09-05T19:24:19Z. Sanborn Map Company, cartographer, publisher. Sanborn Map Company. CtY-BR. English. cartographic image. Public. Colorado, Arvada, Arvada (Colo.), and Arvada.
1964. 2011-12-12T21:32:42Z. 2022-03-29T20:40:08Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Colorado and New Mexico.
1904. 2018-07-31T17:18:44Z. 2018-09-05T19:26:06Z. Sanborn Map Company, cartographer, publisher. Sanborn Map Company. CtY-BR. English. cartographic image. Public. Colorado, Aspen, and Aspen (Colo.).
1952. 2021-06-17T14:18:02Z. 2021-06-22T21:32:58Z. Marden Maps (Firm), cartographer, publisher. Published by Marden Maps. English. cartographic image. Public. Colorado, Boulder, and Boulder (Colo.).
1926. 2018-07-30T18:12:02Z. 2018-09-05T19:29:15Z. Sanborn Map Company, cartographer, publisher. Sanborn Map Company. CtY-BR. English. cartographic image. Public. Colorado, Aurora, Aurora (Colo.), and Aurora.