| Timothy H. O'Sullivan Black Canon of the Colorado River, Looking looking above from Camp 7 1871 Albumen print image: 20.2 x 27.7 cm (7 15/16 x 10 7/8 ins) Princeton University Art Museum Museum purchase, Fowler McCormick, Class of 1921, Fund, Object Number: 2003-242 e LL/44680
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