Copyright © 1990 State Historical Society of Iowa. This article is posted here for personal use, not for redistribution.
"The Nation Builders: a Sesquicentennial History of the Corps of Topographical Engineers, 1838-1863." The Annals of Iowa 50 (1990), 439-439.
Available at: http://ir.uiowa.edu/annals-of-iowa/vol50/iss4/25