| Timothy H. O'Sullivan Ruins in Ancient Pueblo of San Juan, Colorado 1874 Albumen silver print 20.1 x 27.5 cm National Gallery of Canada / Musée des beaux-arts du Canada Purchased 1974, no. 32368 LL/39008 This photograph is available through CyberMuse - cybermuse.gallery.ca (Accessed: August 2010).
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