Geologic Atlas of the United States http://hdl.handle.net/1969.1/2490 2013-03-14T03:39:31Z Estillville folio, Kentucky-Virginia-Tennessee http://hdl.handle.net/1969.1/3692 Estillville folio, Kentucky-Virginia-Tennessee Estillville folio, Kentucky-Virginia-Tennessee 1894-01-01T00:00:00Z Chicago folio, Riverside, Chicago, Desplaines, and Calumet quadrangles, Illinois-Indiana http://hdl.handle.net/1969.1/3691 Chicago folio, Riverside, Chicago, Desplaines, and Calumet quadrangles, Illinois-Indiana Chicago folio, Riverside, Chicago, Desplaines, and Calumet quadrangles, Illinois-Indiana 1902-01-01T00:00:00Z Bessemer-Vandiver folio, Alabama http://hdl.handle.net/1969.1/3690 Bessemer-Vandiver folio, Alabama Bessemer-Vandiver folio, Alabama 1927-01-01T00:00:00Z Gillespie-Mount Olive folio, Illinois http://hdl.handle.net/1969.1/3689 Gillespie-Mount Olive folio, Illinois Gillespie-Mount Olive folio, Illinois 1926-01-01T00:00:00Z