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Yampah Cañon, Colorado / T. H. O'Sullivan, phot.
Photograph showing aerial view of canyon with a river running through it. Plate 75 from: Geological Exploration of the Fortieth Parallel / United States Army Corps of Engineers; Clarence King, geologist in cha... More
Yampah Cañon, Colorado / T. H. O'Sullivan, phot.
Photograph showing a side of the canyon with river below. Plate 78 from: Geological Exploration of the Fortieth Parallel / United States Army Corps of Engineers; Clarence King, geologist in charge. [Washington... More