1983. 2002-06-01T04:00:00Z. 2023-07-08T03:01:29Z. Geological Survey (U.S.). U.S. Geological Survey. English. cartographic image. Public. Idaho and Custer County.
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1969. 2012-10-12T15:28:18Z. 2012-10-12T15:28:18Z. Nelson, Willis H. (Willis Howard), 1920-. U.S. Geological Survey. English. Public. Idaho and Custer County.
1971. 2012-11-07T20:57:13Z. 2012-11-07T20:57:13Z. King, Robert Ugstad, 1912-. U.S. Geological Survey. English. Public. South Dakota, Pennington County, Shannon County, and Custer County.