If you can't make the coin shows at the Rosemont, Convention Center August 16 to 20, you may want to try the Greater Chicago Coin, Currency & Colectible Show. June 30, July 1 & 2, 2011. It's actually in a suburb called Tinley Park. At the Tinley Park Convention Center, 18501 S. harlem Ave. That's Thurs. 3PM to 7PM, Fri. 10AM to 6PM & Sat. 10AM to 5PM.
Free Admission, Free Parking. Usually over 200 Dealers.
Not sure how this will effect the normal 1st Sunday coin show in Lemont, Illinois which is supposed to be July 3, 2011.
That means there is about 10 coin show days from June 30th to August 21st, 2011 around the Chicago area.
Happy 4th of July.