| John K. Hillers The Gate of Lodore [Views on green River: Caņon of Lodore Series.] [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. 242] 1874 Stereoview Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-stereo-1s01652 (digital file from original photo, front) LC-DIG-stereo-2s01652 (digital file from original photo, back) LL/109203 Writing on the back; James C. Pilling.
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