Gateways to commerce : the U.S. Army Corps of Engineers' 9-foot channel project on the upper Mississippi River /Author: O'Brien, William Patrick.
Publisher: Denver, Colo. : National Park Service, Rocky Mountain Region ;
Date: 1992. This title can be found in 7 Iowa libraries.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.