Land classification map of part of south western Colorado [cartographic material] : atlas sheet No. 61 (D).Geographical Surveys West of the 100th Meridian (U.S.)1879"By Order of the Honorable The Secretary of War. Under the"Expeditions of 1873, '74, '75 & '76 under the command of 1st. Lieut. Geo. M. Wheeler, Corps of Engineers, U.S. Army."On verso: 4.Shows geographical features, roads, settlements, and distances.cartographic