By: United States Geological Exploration of the Fortieth Parallel - Bien, Julius, - Eaton, Daniel Cady, - Emmons, Samuel Franklin, - Hague, A. (Arnold), - Hague, James D. (James Duncan), - Hall, James, - King, Clarence, - Meek, F. B. (Fielding B
Vol 1 of the Report of the geological exploration of the fortieth parallel
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