| Timothy H. O'Sullivan Miner at Work, Virginia City, Nevada [Photographs: Geological Explorations of the 40th Parallel, Clarence, King, Geologist in Charge] 1868 Albumen silver print, from glass negative 16.4 x 13.7 cm (6 7/16 x 5 3/8 ins) Metropolitan Museum of Art Gilman Collection, Gift of The Howard Gilman Foundation, 2005, Accession Number: 2005.100.106 LL/40365
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