Maps of explorations and surveys for a railroad route from the Mississippi River to the Pacific Ocean, 1855

Map no. 1. From the valley of Green River to the Great Salt Lake -- Map no. 2. From the Great Salt Lake to the Humboldt Mountains -- Map no. 3. From the Humboldt Mountains to the Mud Lakes -- Map no. 4. From the valley of the Mud Lakes to the Pacific Ocean. 'From explorations and surveys made under the direction of the Hon. Jefferson Davis, Secretary of War, by Capt. E.G. Beckwith, 3rd Artillery, E.G. Egloffstein, topographer for the route. 1855.' ''Selmar Siebert's Engraving & Printing Establishment, Washington, D.C.' Published by the War Dept. Scale 1:760,320. 12 miles to 1 in. Relief shown by hachures and spot heights.