Excuse me, Okie, but this doesn't look like the wood in the center of your first pic?
Is it me, or just this different computer, I've using?
The first pic is either, locust or mulberry like others have said. Mulberry has a smooth golden brown bark! Black locust has a light brown, deep, thick, furrowed bark!
Your last pic, looks somewhat like pignut hickory, but the rings are to defined! Maybe a young walnut? Like to see the bark.