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Minneapolis-St. Paul folio, Minnesota
(Geological Survey (United States), 1916)
Colorado Springs folio, Colorado
(Geological Survey (United States), 1916)
Galena-Elizabeth folio, Illinois-Iowa
(Geological Survey (United States), 1916)
Silver City folio, New Mexico
(Geological Survey (United States), 1916)
Eureka Springs-Harrison folio, Arkansas-Missouri
(Geological Survey (United States), 1916)