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1. Apishapa folio, Colorado

Yale Public content
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.

3. Claysville folio, Pennsylvania

Yale Public content
1912. 2013-03-14T18:31:42Z. 2013-03-14T18:31:42Z. Munn, M. J. (Malcolm John), 1874-1949. The Survey. English. Public. Pennsylvania, Greene County, and Washington County.
1912. 2013-03-14T19:04:25Z. 2013-03-14T19:04:25Z. Phalen, W. C. (William Clifton), 1877-1949. The Survey. English. Public. Kentucky, Boyd County, Carter County, Elliott County, Greenup County, Lawrence County, West Virginia, Wayne County, Ohio, États-Unis, and Virginie-occidentale.

6. Montana - Idaho Missoula quadrangle

Yale Public content
1912. 2011-05-25T19:37:26Z. 2023-04-25T20:46:26Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Montana, Missoula County, Ravalli County, Bitterroot National Forest (Mont.), and Selway National Forest (Idaho).

7. Murphysboro-Herrin folio, Illinois

Yale Public content
1912. 2013-03-14T19:05:52Z. 2013-03-14T19:05:52Z. Shaw, E. W. (Eugene Wesley), 1881-1935. U.S. Geological Survey. English. Public. Illinois and États-Unis.