French is too generic. You have to work down to an individual; ie, soldier, voyaguer, habitant, coureur de bois, trapper, trader, etc. Then try to glean tidbits of info from a wide range of publications. there are lots of books about the French presence from Atlantic Canada to the Great Lakes, WI, MN, down the MS river to Cahokia and Kaskaskia. From forts on the Great Lakes thru the Chicago portage and down the IL river to the MS river and on down clear to New Orleans.
The French were everywhere inland and rather than try to conquer the natives, they tried to assimilate into the tribes. Later, many were part of the western fur trade. Publications by the Museum of the Fur Trade is probably a good place to start. Also, I think you can access the complete "Jesuit Records" online. I downloaded them over 20 years ago.