In the first picture, I'm pretty sure those are preforms/knives knapped by native Americans. Could you please take a picture of the side of each of those pieces? That way will be able to confirm.
Hello, hope the pictues gjve more insight. Further down the creek were a few rocks of intetest. Round stone appears to have pecking marks. The area I live had alot of glacial movement. Carved nice valleys!
Congrats bud and thanks for the pictures, those are all preforms/knives made by native Americans besides the "scrapper" (I'm 1000% sure).
As for the "scrapper", IMO it's a flake resulting from knapping activities (not a tool) but I could be wrong.
Keep looking in the area where you found the preforms/flake and I'm sure you'll find more cool artifacts. Also, could be worth checking on the riverbank nearby for a camp site. If you find a flake on the ground, dig a small hole, if you find flakes in the hole, you're most likely at the place where they were knapping tools!
There is no doubt about the last set being artifacts. While the top pics are probably naturally formed, natives used natural stones around camp daily. Gonna be something good there.