Scale 1:3,000,000. 47.35 miles to 1 in. (W 124°--W 94°/N 46°-- N 34°) ; 1 map ; 76 x 128 cm. ; Relief shown by hachures ; State 3: Includes notes, Great Basin statement, and place name South Park below Bayou Salade; some place names differ from other states ; Includes "Profile of the route from the mouth of the Kansas to the Pacific by Capt. J.C. Fremont in 1843." ; U.S. Senate