Terry - it was found in So Illinois. And the specific site on which it was found does have an early Archaic component ( I found a nice beveled, serrated Dovetail, and numerous early Archaic side notches). It also has a late Archaic component and a Mississippian component. Nonetheless, Scottsbluff is not a point that is normally found in IL. I'm sure somewhere someone has a book with an IL Scottsbluff in it. It's possible that there may have ACTUALLY been a Scottsbluff found in IL, but it would be a real rarity.