Christopher Weeks wrote:When I've dug natural clay for pottery, I did it by scrutinizing road-construction sites for colored (yellow and red in my case) clay.
T Simpson wrote:You would need to be a bit more specific about your location but you could have some shipped from Port Angeles or Olympia. I think Monroe used to have brick factories.
You can also make clay by sifting dirt but that would take a while to do a floor that way.
Maybe call a local pottery store if there is one and ask where they source theirs.