I'm still working on the book about the 26th MI . It is a long process...
19th MI & Coldwater: Coldwater has Civil War Days at
http://www.discover-michigan.com/festivals.htm#Civil_War
I assume you've heard of the book about the 19th MI written by Dr. Anderson?
Here are a few links to help you get hooked up with the SUV:
http://www.suvcwmi.org/hq/gier.php
http://www.mlive.com/penaseeglobe/index.ssf/2008/09/stones_for_fallen_heroes_repla.html
http://members.tripod.com/~tfred/stjocw.html
http://suvcw.org/garposts/mi.pdf