| Timothy H. O'Sullivan Fissure Vent at Steamboat Springs, Nevada [Photographs: Geological Explorations of the 40th Parallel, Clarence, King, Geologist in Charge] 1867 Albumen silver print, from glass negative 22.3 x 29 cm (8 3/4 x 11 7/16 ins) Metropolitan Museum of Art Gilman Collection, Purchase, Marlene Nathan Meyerson Family Foundation Gift, 2005, Accession Number: 2005.100.105 LL/40411
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