http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Geographic area series. East North Central states, Illinois, Indiana, Michigan, Ohio, Wisconsin
east North Central states, Illinois, Indiana, Michigan, Ohio, Wisconsin
Illinois, Indiana, Michigan, Ohio, Wisconsin
1 volume (various pagings) : maps ; 28 cm.
Also available via Internet from the Census website (PDF file only).