There is also a place called Pollack:
http://forums.greekchat.com/gcforums...&postid=242054
Another place that you could try is this company (below), but I should forewarn you that I have no idea whether they are still in business or not. I have an old catalog of theirs and they made rings to pin a badge through, and also the pin on Badge Pendants. They are in Chicago too, which is highly convenient for you....
J.O. Pollack & Company Inc.
1700 West Irving Park Road
Chicago, Illinois 60613-2599
Tel (773) 477-2100 or 1-800-621-1904
Fax (773) 477-2521
Hope that this helps!