I didn't read thru all the posts in this thread so forgive me if this is a duplicate of someones info.

Way back when I lived and hunted most of the eastern prairie. I hunted hogs in baca county south of the Cimmaron river and along the three state borders.
Once when I was there I was approached by a Kansas DOW ranger from Grasslands National Park. Now remember I am in Colorado. He told me I could take hogs on the other side of the line in Ks and since there was no clear jurisdiction in Oklahoma in the vicinity I could hunt there too. I did hunt that area for years and was never again visited by any type of ranger warden or other law enforcement. The area is very desolate and the farms are mostly corporate owned and managed by people that don't hunt.

That was in 94. The last time I was there to hunt was 2000.