"Red Cloud," black and white photograph by the American photographer John K. Hillers (1843-1925), published by Charles M. Bell. The portrait of the chief of the Oglala Lakota Sioux was taken at Washington, D.C. 25.2 cm x 41.4 cm. Yale Collection of Western Americana, Beinecke Rare Book and Manuscript Library, Yale University, New Haven, Connecticut. [John Karl Hillers / Beinecke Rare Book and Manuscript Library [1] -- Public domain -- http://commons.wikimedia.org/wiki/File:Red Cloud by John K Hillers circa 1880.jpg]