Geological Map No. 2 / prepared by J. S. Newberry M.D. geologist to the expedition.
Relief shown by shading and hachures.; "Explorations and Surveys, War Department, map no. 2. 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."; Colored to show different geological areas, with key along bottom border.; Also shows routes of exploration.
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