Parts Of Central & Western Arizona - Atlas Sheet No. 75. Issued Feb'y. 15 1877. Weyss, Herman & Lang Del. Expeditions of 1871, 1872 & 1873, Under the Command of 1st. Lieut. Geo. M. Wheeler, Corps of Engineers, U.S. Army. Geological Assistants: Prof. Jul. Marcou, G.K. Gilbert, A.R. Marvine. U.S. Geographical Surveys West Of The 100th Meridian.
