William Bell 1872 Marble Cañon, one of the gorges of the Colorado here, 1,200 feet deep. [U.S. War Dept., Corps of Engineers; Geographical Explorations and Surveys West of 100th Meridian, Expedition of 1872; Lieut. Geo. M. Wheeler, commanding.]
Stereoview Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-stereo-1s00225 (digital file from original photo, front) LC-DIG-stereo-2s00225 (digital file from original photo, back) LC-USZ62-56300 (b&w film copy neg. of half stereo)
