Their later stuff is available. I admittedly do not seem to have a knack for research. All I know to do is enter search terms in google.

Just went and searched again for "Three Forks of the Cheat," and in the process discovered the actual title was "Three Forks of Cheat." Can't find it in a format I can play, but apparently there are a few copies available here and there as lps or casettes.

That's good for me, and I appreciate the help in finding some of the oldest recordings of the bands I happened to name.   Still, in every locale there were really good bands who made recordings that are gone for good, except, maybe, in some one's very carefully kept private collection.

Of course, think of all the songs and musicians from the time people began making music. The capacity to record has been around how long? Traditional songs and traditional voices have always depended on the oral tradition, and what we sometimes refer to here as "the folk process." I guess if we heard a group do it, learned from them, and keep doing it with all the big and small individual variations, mistakes and misremberances, and then some one else learns it from us, then some else learns it from them, then....