Publisher: The Survey / Year: 1930 - Yale University Library GeoBlacklight Search Results

1. Colorado, Glenwood Springs quadrangle

1930. 2011-05-17T17:13:18Z. 2015-10-21T14:59:20Z. Geological Survey (U.S.). The Survey. English. Public. Eagle County (Colo.), Garfield County (Colo.), Rio Grande County (Colo.), and Routt County (Colo.).

2. Colorado, San Cristobal quadrangle

1930. 2011-05-18T13:20:45Z. 2015-10-21T14:59:26Z. Geological Survey (U.S.). The Survey. English. Public. Hinsdale County (Colo.), La Plata County (Colo.), Mineral County (Colo.), and San Juan County (Colo.).

3. Ironton and vicinity, Colorado

1930. 2002-07-18T14:36:08Z. 2015-10-27T22:19:25Z. Geological Survey (U.S.). The Survey. English. Public. Colorado, Ouray County, San Miguel County, Ouray County (Colo.), and San Miguel County (Colo.).

4. Sugar Loaf--St. Kevin mining districts, Colo

1930. 2018-05-15T19:50:48Z. 2022-12-08T04:43:49Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. Lake County (Colo.), Colorado, Lake County, and Lake County.