Riddle folio, Oregon
Author(s)
Bibliographic Information
Riddle folio, Oregon
(Geologic atlas of the United States, no. 218)
U.S. Geological Survey, 1924
Cartographic Material(Map)
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Note
MAP:Scale 1:125,00 (W 123[0]30ʹ--W 123[0]/N 43[0]--42[0]30ʹ
Title from cover
At head of title: Department of the Interiour, United States Geological Survey, George Otis Smith, director
Lack of maps: Areal geology, Structure sections