I'm trying to figure out the same thing. It is my understanding that many of the records are held by the
Michigan State Archives and that the process is somewhat involved. Because of privacy laws, I am guessing you would have to contact the
Michigan Department of Community Health. They will explain the process and then you take it from there. Their contact information is at
http://www.michigan.gov/som . In most circumstances, I believe you would have to get a court order for the records.
I also found a discussion board relating to the hospital. It had very helpful information, particularly in the series of posts titled "re: grandmother". Those aren't current posts but have really good info. Here is the link to the discussion board:
http://pub13.bravenet.com/forum/static/show.php?usernum=1094...Of course you can also post there yourself if you would find that to be helpful. Good luck on your search.