MapRio 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
MapDiagram showing the history of the exploration and navigation and survey of the Grand and other canons of the Colorado River of the West from 1540 to 1908. Available also through the Library of Congress web site as a raster image.
- Contributor: Stanton, Robert Brewster
- Date: 1908