[057-02]Record of Mississippi River Diversion in the Morton Loess of Illinois
Glass, H.D., Frye, John C., and Willman, H.B. Record of Mississippi River Diversion in the Morton Loess of Illinois 057-02-print
[057-01]Early Pennsylvanian Microfaunas of the Illinois Basin
Thompson, M.L. and Shaver, R.H. Early Pennsylvanian Microfaunas of the Illinois Basin 057-01-print