Timothy H. O'Sullivan 1873 Explorers column, Cañon de Chelle, Arizona. [U.S. War Dept., Corps of Engineers; Geographical Explorations and Surveys West of 100th Meridian, Expedition of 1873; Lieut. Geo. M. Wheeler, commanding.]
Stereoview Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-stereo-1s00294 (digital file from original photo, front) LC-DIG-stereo-2s00294 (digital file from original photo, back) LC-USZ62-20328 (b&w film copy neg. of half stereo)
