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Parker folio, South Dakota
(Geological Survey (United States), 1903)
Huron folio, South Dakota
(Geological Survey (United States), 1904)
Alexandria folio, South Dakota
(Geological Survey (United States), 1903)
De Smet folio, South Dakota
(Geological Survey (United States), 1904)
Mitchell folio, South Dakota
(Geological Survey (United States), 1903)
Belle Fourche folio, South Dakota
(Geological Survey (United States), 1909)
Olivet folio, South Dakota
(Geological Survey (United States), 1903)
Oelrichs folio, South Dakota-Nebraska
(Geological Survey (United States), 1902)