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jstor.org
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Chaput, Donald (July 1972). "Generals, Indian Agents, Politicians: The Doolittle Survey of 1865". Western Historical Quarterly. 3 (3): 269–282. doi:10.2307/967424. JSTOR967424.
Castile, George P. (April 1981). "Edwin Eells, U.S. Indian Agent, 1871-1895". The Pacific Northwest Quarterly. 72 (2): 62. JSTOR40490672.