I read about an interesting site in the Washington Post:

http://www.washingtonpost.com/wp-dyn/content/article/20...eferrer=emailarticle

I checked out the site, MilitaryAvenue.com, and it was quite helpful around Great Lakes. I believe they have info for all the major military installations in the States. If you have a chance give it a quick look and let me know if it was helpful for you too.