Coincidentally a regular poster on canoecountry.com just mentioned that he got back from there.  Here's a   (You need to Login or Register to his post, you could email him from there.

I went to summer camp in the Manitowish area in the mid-70s but only went on one canoeing trip around there before I lucked out and got sent up to Quetico, which was my old stomping grounds from earlier in the 70s.  I have fond memories of northern Wisconsin but it sure pales compared Q.