Timothy H. O'Sullivan 1873 (taken) (published) No. 41, Ancient ruins in the Cañon de Chelle, N. M. In a niche 50 feet above present Canon bed [Photographs showing landscapes, geological and other features, of portions of the Western Territory of the United States ]
Lieut. Geo[rge] M[ontague] Wheeler, 1873, Photographs showing landscapes, geological and other features, of portions of the Western Territory of the United States obtained in connection with Geographical and Geological Explorations and Surveys West of the 100th Meridian, seasons of 1871, 1872 and 1873, (Washington: War Department, Corps of Engineers, U.S. Army)
