http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
River mileages and drainage areas for Illinois streams
v. 1. Illinois except Illinois River basin.--v. 2. Illinois River basin.
by R. W. Healy ; prepared in cooperation with U.S. Army Corps of Engineers.
Bibliography: volume 1, page 3; volume 2, page 3.