Reccomendations on Carboniferous Localities in E. PA, WV, and KY

[JK Marquis]

I'm going to be taking a drive this year from Pittsburgh to Charlottesville to SE Kentucky, to Knoxville, TN to catch some of the autumn foliage, and was wondering if anyone had any suggestion on fossilized foliage outcrops or spoils piles. I'm trying to focus on ferns and other plants, as I've collected a lot of marine fossils previously and want to get some new types of specimens.  I've seen some stuff online about Ambridge, PA and Big Hill in KY, but haven't been able to find too many other public spots besides that.

Just wondering if anyone had any suggestions or recommendations. Thanks.