Well, actually, Tom T. Hall DID introduce it to a broader audience than it had previously enjoyed, since he was big in country music at the time, but check back to what Rick and I said about The Seldom Scene/Country Gentlemen/Waldron & Emerson. These were the real beginnings of its life as a bluegrass tune. Many, many others have performed it since, but it dates back to these groups in the Washington DC area. I keep meaning to find the exact scenario and time frame, but have not done it yet.