johnny bubba,
Ohio R/C was started by Bob Ankney. It folded. Bob started Pro-Line. He moved the operation from Ohio to Texas, then closed shop again.
Precision Cut Kits now produce the Ohio RC/Pro-Line kits and accessories. They may offer plans, although they are not listed separately on their website.
I bought Bob's kit # 6, fley it for years, then replaced it with another one. Now I'm building a second wing purchased from Precision Cut Kits.
Hope you have some success.
TStick