Courtenay, F. lettererDahl, James, former ownerEgloffstein, F. W., 1824-1885, topographerFloyd, John B. (John Buchanan), 1806-1863, ordererHumphreys, A. A. (Andrew Atkinson), 1810-1883, directorIves, J. C., explorerSartain, Samuel, 1830-1906, rulerUnited States. Office of Explorations and Surveys, director.Relief shown by shading and hachures. Also shows routes of exploration. At head of title: Explorations and Surveys, War Department, map no. 2. 1 map; 38 x 89 cm, folds to 27 x 18cm.JPEG370a2e27-9cf8-4bec-b6c2-460e805b3087engPublicRio Colorado of the West; explored by 1st. Lieut. Joseph C. Ives, Topl. Engrs. under the direction of the Office of Explorations and Surveys, A.A. Humphreys, Capt. Topl. Engrs. in charge, by order of the Hon. John B. Floyd, Secretary of War; drawn by Frhr. F.W. v. Egloffstein, topographer to the expedition.; Explorations and Surveys, War Department, map no. 2.MapsTexas--Colorado RiverTexas1858University of Michigan