1. & ( 1989). Geomorphological investigations: Mississippi River Pool 22, Illinois and Missouri with archaeological and historical overviews. Sheboygan, WI: Donahue and Associates. Report submitted to Rock Island District, Corps of Engineers.
2. The Fate of Eroded Soil: Sediment Sinks and Sediment Budgets of Agrarian Landscapes in Southern Minnesota, 1851–1988
3. & ( 1985). Archaeology and landscapes in Saylorville Lake, Iowa. Fieldtrip guidebook. Iowa City: Association of Iowa Archaeologists.
4. Contribution;Bettis,1990
5. ( 1992). Soil morphological properties and weathering zone characteristics as age indicators in Holocene alluvium in the Upper Midwest. In (Ed.), Soils in archaeology (pp. 119-144 ). Washington, DC: Smithsonian Institution Press.