this is some of the flint (ok, not all of them are flint) i have found in my area not as impressive as others but it is what I'm finding. sorry for the crappy pictures. it is all i got at the moment.
They used what ever they had at the moment. It is what it is. I find some crude pieces also dont be ashamed at least you are finding some worked pieces. You have found some good ones.
You don't have to apologize for any of those,we ALL find those then ......BAM ! a perfect one wil come along.I really like that triangle (Madison ) point and those gun flints are exceptional finds.