I went to my first fish swap a couple weeks ago; there were lots of breeders there with their fish. Nice fish at a good price, too--I had a great time.
Check out the GWASC (Green Water Aquarist Society Of Chicagoland) http://gwasoc.org/modules/tinycontent/index.php?id=2
. If you're a member and looking for something specific, you can post to see if someone has it and can bring it to a swap.
They have a couple fish swaps/auctions of their own a month, there's a swap this weekend, and on their calendar you'll see a listing for the GCCA (Greater Chicago Cichlid Association) Swap Meet on 11/26