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Now showing items 1-10 of 11
La Plata folio, Colorado
(Geological Survey (United States), 1899)
Pawpaw-Hancock folio, Maryland-West Virginia-Pennsylvania
(Geological Survey (United States), 1912)
Mercersburg-Chambersburg folio, Pennsylvania
(Geological Survey (United States), 1909)
Aladdin folio, Wyoming-South Dakota-Montana
(Geological Survey (United States), 1905)
Devils Tower folio, Wyoming
(Geological Survey (United States), 1907)
Sundance folio, Wyoming-South Dakota
(Geological Survey (United States), 1905)
Bald mountain-Dayton folio, Wyoming
(Geological Survey (United States), 1906)
Philipsburg folio, Montana
(Geological Survey (United States), 1915)
Patoka folio, Indiana-Illinois
(Geological Survey (United States), 1904)
Bradshaw Mountains folio, Arizona
(Geological Survey (United States), 1905)