Timothy H. O'Sullivan 1871 (taken) 1873 (published) No. 5, Black Cañon, Colorado River, Looking Above from Camp 7 [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)
