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Now showing items 41-50 of 51
Kenova folio, Kentucky-West Virginia-Ohio
(Geological Survey (United States), 1912)
Belleville-Breese folio, Illinois
(Geological Survey (United States), 1915)
Nevada City special folio, California
(Geological Survey (United States), 1896)
Philipsburg folio, Montana
(Geological Survey (United States), 1915)
Mother Lode district folio, California
(Geological Survey (United States), 1900)
Murphysboro-Herrin folio, Illinois
(Geological Survey (United States), 1912)
Patoka folio, Indiana-Illinois
(Geological Survey (United States), 1904)
Tallula-Springfield folio, Illinois
(Geological Survey (United States), 1913)
Bradshaw Mountains folio, Arizona
(Geological Survey (United States), 1905)
Cloud Peak-Fort McKinney folio, Wyoming
(Geological Survey (United States), 1906)