John K. Hillers 1873 View down the canon [Kanab.] [U.S. topographical and geological survey of the valley of the Colorado River of the west, by J.W. Powell and A.H. Thompson. No. 070]
Stereoview Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-stereo-1s00812 (digital file from original photo, front) LC-DIG-stereo-2s00812 (digital file from original photo, back) LC-USZ62-64792 (b&w film copy neg. of full stereo)
