• Map
    Rio Colorado of the West Relief shown by shading and hachures. Also shows routes of exploration. At head of title: Explorations and Surveys, War Department, map no. 2. Available also through the Library of Congress Web site as a raster image. 3 copies
    • Contributor: Ives, J. C. - Egloffstein, F. W. - Humphreys, A. A. (Andrew Atkinson) - United States. Office of Explorations and Surveys
    • Date: 1858