Posted by:
Nickvet419
(---.dsl.chcgil.sbcglobal.net)
I was able to map out the Indian Boundary Line using aerial imagery. It was actually quite easy to follow if you know what to look for. One main giveaway was the Indian Boundary Roads. Another giveaway were the major mile roads that have a slight bend in them where they meet up with the boundary. The last giveaway are some property lines that end on the boundary. Enjoy! :-)
Here is a link to the path mapped out on Openstreetmap.com http://ra.osmsurround.org/analyzeMap?relationId=1778544
To answer the question above, the boundary changes direction 2 times on the north side. The south side is a strait line all the way to the Kankakee River as you can see here.