I am not sure about this area, but you may want to try and get ahold of Dr. J. Hill Craddock who teaches at the University of Tennessee at Chattanooga. He was a teacher of mine while I was in school and is at the forefront of American chestnut cultivation in the southeastern U.S. I hope that this helps.
All the best,
From: Tom McGlynn <[address removed]>
To: [address removed]
Sent: Wednesday, August 7,[masked]:55 PM
Subject: [penn-permaculture] American Chestnuts