Map no. 2 from Great Salt Lake to the Humboldt Mountains: from explorations and surveys made under the direction of the Hon. Jefferson Davis, Secretary of War; by Capt. E.G. Beckwith, 3d. Artillery; F.W. Egloffstein, topographer for the route.; Explorations and surveys for a rail road route from the Mississippi River to the Pacific Ocean. Image University of Michigan Public content