This map shows the Indian Trails that traversed Jackson County, Michigan. I wish there were more maps like it. You can see this map in detail, along with the ability to zoom, at the following link at the Michigan archives:
This map was created about 1930 and shows many different Indian trails. The information about the trails was taken from various sources including the field notes from the land office surveys made from 1815-1825, from Farmer’s 1835 map of the Michigan Territory and from information taken from old settlers living in the vicinity.
Hat tip to Bill for sending me the link to the Michigan archives.