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1906. 2020-03-05T17:59:12Z. 2021-05-19T17:50:14Z. Geological Survey (U.S.). U.S. Geological Survey. English. cartographic image. Public. Tombstone (Ariz.), Cochise County (Ariz.), Arizona, Tombstone, Cochise County, Cochise County., and Tombstone.
1908. 2002-06-01T04:00:00Z. 2015-10-27T22:18:19Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Arizona, Tombstone, and Tombstone (Ariz.).
1893. 2020-03-05T18:23:28Z. 2021-07-02T03:01:24Z. Geological Survey (U.S.). U.S. Geological Survey. English. cartographic image. Public. California, Nevada County, Nevada County (Calif.), and Nevada County.
1903. 2021-09-17T15:20:16Z. 2021-09-18T03:01:36Z. Geological Survey (U.S.). U.S. Geological Survey. English. cartographic image. Public. Coeur d'Alene Mining District (Idaho), Idaho, Shoshone County, and Coeur d'Alene Mining District.

9. Ironton and vicinity, Colorado

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1930. 2018-05-15T19:36:45Z. 2022-12-08T04:43:49Z. Geological Survey (U.S.). U.S. Geological Survey. English. cartographic image. Public. Ouray County (Colo.), San Miguel County (Colo.), Colorado, Ouray County, San Miguel County, Ouray County., and San Miguel County.