| Timothy H. O'Sullivan Black Canyon, Colorado River, Looking Below from Big Horn Camp 1871 Albumen print image: 20.1 x 27.2 cm (7 15/16 x 10 11/16 ins) mount: 39.5 x 49.9 cm (15 9/16 x 19 5/8 ins) Princeton University Art Museum Museum Purchase, gift of William J. Salman, Class of 1955, Object Number: 2001-37 LL/44677
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