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Now showing items 21-28 of 28
Colfax folio, California
(Geological Survey (United States), 1900)
Ann Arbor folio, Michigan
(Geological Survey (United States), 1908)
Bald mountain-Dayton folio, Wyoming
(Geological Survey (United States), 1906)
Mother Lode district folio, California
(Geological Survey (United States), 1900)
Patoka folio, Indiana-Illinois
(Geological Survey (United States), 1904)
Bradshaw Mountains folio, Arizona
(Geological Survey (United States), 1905)
Cloud Peak-Fort McKinney folio, Wyoming
(Geological Survey (United States), 1906)
Gaines folio, Pennsylvania-New York
(Geological Survey (United States), 1903)