Canyon Sheet. Geology Sheet XII. Monograph XXXII. Yellowstone National Park. U.S. Geological Survey. Charles D. Walcott, Director. 1904. Julius Bien & Co. Lith. N.Y. Henry Gannett, Chief Geographer. J.H. Renshawe, Geographer in charge. Triangulation by H.S. Chase. Topography by Frank Tweedy. Surveyed in 1884-5. Geology by Arnold Hague, Geologist in charge, Joseph Paxson Iddings, Walter Harvey Weed, and George M. Wright, Surveyed 1883 to 91, and 93.
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Canyon Sheet. Geology Sheet XII. Monograph XXXII. Yellowstone National Park. U.S. Geological Survey. Charles D. Walcott, Director. 1904. Julius Bien & Co. Lith. N.Y. Henry Gannett, Chief Geographer. J.H. Renshawe, Geographer in charge. Triangulation by H.S. Chase. Topography by Frank Tweedy. Surveyed in 1884-5. Geology by Arnold Hague, Geologist in charge, Joseph Paxson Iddings, Walter Harvey Weed, and George M. Wright, Surveyed 1883 to 91, and 93.
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