U.S. Army Corps of Engineers, Rock Island (MVR) and St. Paul (MVP) Districts reports
“Report on the Sedimentary Characteristics of the Upper Mississippi River,” USACE, St. Paul District, 1935. Available through ERDC Library.
“Suspended Sediment Program of the Rock Island District Office, Corps of Engineers, U.S. Army,” T.L. Pewe, Journal of Sedimentary Petrology, Vol 16, No. 3, pp 97-109, 1946. Available through GeoScience.