Bill Vassh used to sell Argos in Racine, WI. In the 90's he used to organize aatv runs in Racine and Kenosha areas. Those people are still around there someplace. Tony Bianco in McHenry Co. I think it was, used to deal in Max, Argo and Land Tamer. I see he no longer has his web site up. Used to sell a lot of machines. They are there in your area but I think they are all hiding

or have sold them on eBay or Cragslist. Lots of machines from your area have gone on the auction for what ever reason.

Across the border in WI, Kenosha Co. the state has an off road vehicle play area, it used to be limited to registerd ATV/4-wheelers. Maybe they have changed. Contact the WI DNR or check out their web site. NE ILL and SE WI used to be heavy Amphicat and Hustler country.
We have a lot of silent members that have never posted. I think they joined to read and do research but for what ever reason, do not contribute.
This is a list of machines
that I know are in Northern IL:
Justice, IL Argo Vanguard II
Sheffield, IL Two MAX II’s and a Sierra Trail Boss
Dundee, IL Max II
Minooka, IL Terra-Tiger
Mt. Vernon, IL Argo Bigfoot
Genoa, IL Max II
Harvard, IL Amphicat
Streator, IL Attex 400 Chief
Lombard, IL Max IV
Pecatonica, IL Muscateer
Woodstock, IL Max II
Davis, IL Terra Tiger
DeKalb, IL Terra Tiger
Are you close to Rockford

On Hwy 2, a couple miles north of Hwy 20 there is an off road vehicle park just off 2 on the east side. Can't remember the name of the place

and I don't know if aatv's run there. I just saw the sign at the place at the beginning of the month when I was down that way. It may be worth checking it out if you live close.