[Koha] Koha installations in the Michigan Area

Folks - My library had it's first meeting today of the committee that is going to replace our ancient Dynix catalog system. It looks like the major players in the committee, the director of the library and my boss, the systems admin, might have already made up their minds as to which catalog vendor we are going with. However, if I can show them that Koha could do what they want, I might still have a chance to sway them in the proper direction. Are there any libraries in the Southwestern Michigan area that are using Koha? if not SW Michigan, who is the closest the to Battle Creek/Kalamazoo area? Thanks again - Mark