In the interests of anality (is that a word?) and being as I am from Michigan, I would like to point out the only factual error that I have found thus far in the Millenium City book.
On page 45, it is mentioned that Michigan State University is located in "nearby" Lansing. Having been there yesterday, I can confirm that it is in fact in East Lansing, which is a separate community adjacent to Lansing proper; a suburb, I would say, although I am not sure how they actually define it. In fact, I purchased my copy of Millenium City in East Lansing.
If this is the only "error" in the book, and I suspect it is, then you folks have done an absolutely amazing job
Allen