Territory Of The United States From The Mississippi River To The Pacific Ocean; Originally prepared to accompany the Reports of the Explorations For A Pacific Railroad Route ... Compiled from authorized explorations and other reliable data by Lieut. G.K. Warren, Top'l. Eng'rs. In the Office of Pacific R.R. Surveys, War Dept. under the direction of Bvt. Maj. W.H. Emory, Top'l. Eng'rs. in 1854. Capt. A.A. Humphreys, Top'l. Eng'rs. in 1854-58. Recompiled and redrawn under the direction of the Chief of Corps of Engineers By Edward Freyhold 1865-66-67-68. Head Quarters Corp Of Engineers, War Department. Engraved & printed by Julius Bien, N.Y. (inset) Territory Of Alaska Ceded By Russia To The United States 1868