From a message I saved a few years ago:
"The Hardwood Store (now called Appalachian Millworks) has a web site, a large selection of s2s, and plywood. They are just north of I70 at route 235. (North of Dayton).
Miller's saw mill has rough sawn domestics at better prices than the hardwood store. They are just north of 70 at route 127. (northwest of Dayton)."
I've not purchased from either of these, they might be possible leads. Willis Lumber in Washington C.H. has rough sawn hardwood but may only offer larger quantities (wholesale). I've also heard of another Millers Lumber just over the Indiana border.
Good Luck!
"Mike W." wrote: