Wards map of the City of Chicago, used for the Chicago City Council from the 2003 aldermanic election until 2015. Shapefile from the <a rel="nofollow" class="external text" href="https://data.cityofchicago.org/Facilities-Geographic-Boundaries/Boundaries-Wards-2003-2015-/xt4z-bnwh">Chicago Data Portal</a>, modified with <a rel="nofollow" class="external text" href="https://mapshaper.org/">Mapshaper</a> (Mercator projection, Helvetica).
<a href="//commons.wikimedia.org/wiki/User:Twotwofourtysix" title="User:Twotwofourtysix">Twotwofourtysix</a>
<span class="int-own-work" lang="en">Own work</span>