Scale [ca. 1:3,231,360. 1 in. to approx. 51 miles] (W 125°00--W 103°30/N 42°00--N 31°45) ; 1 map : hand col. ; 40 x 60 cm., on sheet 46 x 68 cm ; Relief indicated by hachures and spot heights ; Prime meridians: Greenwich and Washington, D.C ; Decorative border ; Hand colored ; Atlas p. numbers in upper margin: 58-59 ; Date est. from territorial borders and county configuration ; Shows natural features, locations of Indian tribes, proposed railroad routes, routes of explorers, trails, county boundaries and populated places ; Johnson and Ward