Relief shown by hachures.
Includes legend and note: The localities inclosed within (-----) are the Gold regions as indicated by Capt. John Mullan of the 2nd Arty. U.S.A. Nov. 13th, 1862.
Shows topography, waterways, boundaries roads, railroad routes, trails, townships, Indian reservations, "Gold Mines now being worked."
"H.R. Ex. Doc. No.1. 37th Cong. 3d. Sess."