made under the direction of Capt. A.A. Humphreys, U.S. Topl. Engrs., by Lieut. John Mullan, U.S. Army, assisted by Theodore Kolecki and Gustavus Sohon, Civil Engrs., while attached to the military expedition under Col. Geo. Wright, 9th Infantry, in 1858.
Relief shown by form lines.
Shows approximate location of military road constructed 1859 to 1862.
Also shows farms, camps, trails, bridges, vegetation types, rapids, rock outcrops, landings, and locations of battles.
"Senate Ex. Doc. No. 43-47th Cong. 3d. Sess."