Rand McNally and CompanyIncludes list of "Principal Trails in Colorado" and index to cities in margin.; Map on verso also shows electric lines.; In lower right corner: "7R24."; Date estimated from population listings.each 47 x 65 centimetersJPEGUMN_ALMA:9951857480001701engRand McNally and Company (Chicago)PublicRand McNally main highway map of ColoradoMapsColoradoUniversity of Minnesota