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Now showing items 18191-18200 of 18406
Newcastle folio, Wyoming-South Dakota
(Geological Survey (United States), 1904)
Estillville folio, Kentucky-Virginia-Tennessee
(Geological Survey (United States), 1894)
Dover folio, Delaware-Maryland-New Jersey
(Geological Survey (United States), 1906)
St. Marys folio, Maryland-Virginia
(Geological Survey (United States), 1906)
La Plata folio, Colorado
(Geological Survey (United States), 1899)
Elkland-Tioga folio, Pennsylvania
(Geological Survey (United States), 1903)
Muscogee folio, Indian Territory
(Geological Survey (United States), 1905)
Nueces folio, Texas
(Geological Survey (United States), 1897)
Huron folio, South Dakota
(Geological Survey (United States), 1904)
Holyoke folio, Massachusetts-Connecticut
(Geological Survey (United States), 1898)