'Department of the Interior, General Land Office, October 2nd, 1886, [signed] Jos. S. Wilson, Commissioner.' 'The Major & Knapp Eng. Mfg. & Lith. Co. 71 Broadway, N.Y.' Relief shown by hachures. Hand colored. Shows silver, gold, and copper mines. Scale [1:1,140,480]. 18 miles to an in. (W 120°--W 114°/N 42°--N 35°)