Report of the geological exploration of the fortieth parallel

United States Geological Exploration of the Fortieth Parallel (1867-1881), King, Clarence, 1842-1901, Hague, A. (Arnold), 1840-1917, Emmons, Samuel Franklin, 1841-1911, Hague, James D. (James Duncan), 1836-1908, Meek, F. B. (Fielding Bradford), 1817-1876, Hall, James, 1811-1898, Whitfield, R. P. (Robert Parr), 1828-1910, Ridgway, Robert, 1850-1929, Watson, Sereno, 1826-1892, Eaton, Daniel Cady, 1834-1895, Bien, Julius, 1826-1909, engraver · 1870 · (Washington, D.C. : G.P.O.) · 1 picture

A U.S. government survey report on the geology of the fortieth parallel, directed by Clarence King with Arnold Hague and Samuel Emmons, issued by the Government Printing Office in Washington from 1870 for geologists, mining interests and Congress.

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