I got a buddy in Carlisle, he doesn't burn but may know something.... Let me message him and see if he can put an ear to the ground.... Any CL listings your way?
Have you checked right up the road in Fort Loudon, west of you? There is a firewood dealer there that has literally a MOUNTAIN of kiln-dried cordwood. I think BrianK bought some last season or the season before.
I never actually bought any as it was too far away, but here's the thread. I'm sure prices have changed so you should probably just contact them directly: Kiln dried hardwood, $145 per cord, central PA