Soil survey of Rock Island County, Illinois /

by Elmer, Steven L.
[Washington D.C.] : Natural Resources Conservation Service, 2004

Soil survey of Madison County, Illinois /

by Leeper, Randall A.
[Washington, D.C.] : U.S. Dept. of Agriculture, Natural Resources Conservation Service, 2004

Soil survey of Cumberland County, Illinois /

by Tegeler, R. A.
[Washington, D.C.] : The Service, 2002

Soil survey of Clinton County, Illinois /

by Hamilton, Gary
[Washington, D.C.] : The Service, 2002

Soil survey of Franklin and Jefferson Counties, Illinois /

by Preloger, David E.
[Washington, D.C.] : Natural Resources Conservation Service, 2003

Soil survey of Adams County, Illinois /

by Tegeler, R. A.
[Washington, D.C.?] : Natural Resources Conservation Service, 2003

Soil survey of Champaign County, Illinois /

by Endres, Tonie J.
[Washington, D.C.] : Natural Resources Conservation Service, 2003

Soil survey of Schuyler County, Illinois /

by Suhl, Steven E.
[Washington, D.C.?] : Natural Resources Conservation Service, 2003