yes WLS is still around (but no longer owned by Sears, is is now part of the mega-Cumulus Media Corporation)
it used to be Sear’s radio outlet, heard throughout the midwest and at nights almost everywhere else, too:
http://www.wlshistory.com/WLS20/
Bahh to Cumulus! but they beat the others.
I swear on good propagation nights I can get WLS in Tx