| Duhem & Bro. [Falls in North Boulder Canon] [Beauties of the Rocky Mountains.] 1869-1879 Stereoview Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-stereo-1s01598 (digital file from original photo, front) LC-DIG-stereo-2s01598 (digital file from original photo, back) LL/108412
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