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Now showing items 221-230 of 279
Accident-Grantsville folio, Maryland-Pennsylvania-West Virginia
(Geological Survey (United States), 1908)
Brownsville-Connellsville folio, Pennsylvania
(Geological Survey (United States), 1903)
Ann Arbor folio, Michigan
(Geological Survey (United States), 1908)
Waynesburg folio, Pennsylvania
(Geological Survey (United States), 1905)
Montevallo-Columbiana folio, Alabama
(Geological Survey (United States), 1940)
New York City folio, Paterson, Harlem, Staten Island, and Brooklyn quadrangles, New York-New Jersey
(Geological Survey (United States), 1902)
Latrobe folio, Pennsylvania
(Geological Survey (United States), 1904)
Columbia folio, Tennessee
(Geological Survey (United States), 1903)
Kittanning folio, Pennsylvania
(Geological Survey (United States), 1904)
Raton-Brilliant-Koehler folio, New Mexico-Colorado
(Geological Survey (United States), 1922)