1910. 2019-02-27T20:31:42Z. 2019-04-23T16:26:36Z. Geological Survey (U.S.), cartographer. U.S. Geological Survey. English. cartographic image. Public. Colorado, Leadville, Leadville (Colo.), and Leadville.
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1913. 2019-05-08T14:31:32Z. 2020-01-02T20:57:18Z. Geological Survey (U.S.), cartographer. The Survey. English. cartographic image. Public. Colorado, Leadville, Leadville (Colo.), and Leadville.