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Rico folio, Colorado
(Geological Survey (United States), 1905)
Silverton folio, Colorado
(Geological Survey (United States), 1905)
Needle mountains folio, Colorado
(Geological Survey (United States), 1905)
Engineer Mountain folio, Colorado
(Geological Survey (United States), 1910)
Ouray folio, Colorado
(Geological Survey (United States), 1907)