We have a chestnut tree here in Sagamore Hills, Ohio that's at least 40 or 50 years old that I know of. I would say it's at least 60 ft. tall,probably more. Is there anyone that would be interested in looking at it? If there's something that I should look for to identify if it's an American one, I would be more than happy to. My email is SirKayofJ@aol.com