Part Of North Central New Mexico-Atlas Sheets No. 70, (C.). Issued May 7th 1877. 2nd. Ed. June 30th, 1881. Weyss, Herman & Lang Del. Expeditions of 1878 & 1879 Under the Command of 1st. Lieut. Geo. M. Wheeler, Corps of Engineers U.S. Army. Prof. John J. Stevenson, Geological Assistant. U.S. Geographical Surveys West Of The 100th Meridian.