Map no. 2. Rio 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.
Description: Map shows mid-nineteenth century routes of exploration and navigation along the Colorado River. Relief shown by shading and hachures. Scale [ca. 1:760,320].
Creator: Ives, J. C.
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Partner: University of Texas at Arlington Library