1999, 28 October Page from Sotheby‘s Sale "The Frank T. Siebert Library of the North American Indian and the American Frontier" (New York, Thursday October 28, 1999) [Ogallalla Sioux]
Sale catalog page Etherton Gallery Photographs of Red Cloud and Principal Chiefs of Dacotah Indians Taken on Their Visit to Washington, D.C., May, 1872 Washington D.C.: for Trustees of Blackmore Museum, Salisbury, England, [Gibson Brothers, Printers, 1872]
