| Timothy H. O'Sullivan Fissure Vent of Steamboat Springs, Nevada 1867 Albumen silver print, from glass negative 21.9 x 28.8 cm (8 5/8 x 11 5/16 in) Metropolitan Museum of Art Gilman Collection, Purchase, Marlene Nathan Meyerson Family Foundation Gift, 2005 (2005.100.105) LL/7458
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