The last pic, I would say is either a tool or preform.. Its Rhyolite. Looks like maybe a plow ding. I have seen lots of preforms that have quite shape edges like that, so its really difficult to say whether its a tool or preform. Still a keeper, nice find.
The other two I would say just rock, although the rounded stone could be a grinding stone, hard to say from pic.
Thanks for sharing Binman.Always like to see artifacts from my fave State.
Molly.