Report upon the Colorado River of the West : explored in 1857 and 1858 by Joseph C. Ives, Corps of Topographical Engineers, under the direction of the Office of Explorations and Surveys, A.A. Humphreys, Captain Topographical Engineer, in charge : by order of the Secretary of War. - Ives, J. C.; Newberry, J. S.; Humphreys, A. A. (Govt. Print. Off,, 1861)