Copyright © 2015 Durwood Ball. This article is posted here for personal use, not for redistribution.
Ball, Durwood. "Beyond Traverse des Sioux: Captain Edwin V. Sumner's Expedition to Devil's Lake in 1845." The Annals of Iowa 74 (2015), 1-28.
Available at: http://ir.uiowa.edu/annals-of-iowa/vol74/iss1/2