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Start Over You searched for: Author Geographical and Geological Survey of the Rocky Mountain Region (U.S.) Remove constraint Author: Geographical and Geological Survey of the Rocky Mountain Region (U.S.) Year 1876 Remove constraint Year: 1876 Bounding Box -40.000931 39.999015 -39.999064 40.000987 Remove constraint Bounding Box: -40.000931 39.999015 -39.999064 40.000987

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1876. Dall, William Healey, 1845-1927, Geographical and Geological Survey of the Rocky Mountain Region (U.S.), and Powell, John Wesley, 1834-1902. Relief shown by hachures. "U.S. Geographical and Geological Survey of the Rocky Mountain Region J.W. Powell in charge." From: Contributions to Nort...