Check on line with campchase.com That is the online publication for re-enactors called the Camp Chase Gazette. They usually have a listing of events all over the country. I would also look into your local tourism board or even historical societies that are in and around the area. They usually know what is going on as well. Around these parts we have a very nice man who is charge of the 3rd. Wisconsin's web site, and he has a great section on his site for mid-west events:
http://www.3rdwisconsin.org/badgerbo...file=index&c=9
If anyone has an event in the areas listed, Joe encourages you to put them on the site. Even if the 3rd is not attending, he likes to have the site jammed packed full of dates for other re-enactors to be able to go to.
Hope that helps.
Jenna