A good source is: Go to Google. Then type inMcGee Family Genealogy Forum.Once there in the search box type in Michigan.It will bring up folks searching for McGee's in that state. You might find a relative or post your own message. I have looked and there are postings with inquiries about Michigan McGee's.
For any surname you search the process is the same.Just type in the surname and then the rest as shown above.
Sometimes the forum may not come up right away so then use the surname plus Genealogy.