This is the ward map for Chicago that was in effect between 1998 and early 2003. The file was derived from the TIGER 1998 voting district file. Some boundaries were altered to more closely resemble the boundaries shown in the city of Chicago's published ward maps. ESRI shapefiles created at the University of Chicago Library Map Collection. Created during the 1990s from contemporary TIGER files. Files may have problems associated with TIGER files of the period. Attribute authorship to the Map Collection, University of Chicago Library and any other personal authors named in text.