Exploration of the Colorado River of the West and its tributaries : Explored in 1869, 1870, 1871, and 1872, under the direction of the secretary of the Smithsonian institution Auteurs : Powell John Wesley (1834-1902) ; Thompson A. H. Almon Harris (1839-1906) ; Coues Elliott (1842-1899) ; Goode G. Brown George Brown (1851-1896) ; Smithsonian Institution ; Editeurs : Washington Govt. print. off. ; Date d'édition : 1875 Sujets : Colorado River (Colo.-Mexico) -- Description and travel, United States, Powell, John Wesley -- Journeys Colorado River (Colo.-Mexico)