Roger made three of those albums for Folkways, between 1963 and 1965. He was way ahead of his time, but I don't think he ever got the recognition that came later to Bill Keith, Tony Trischka, or Bela Fleck. The player today who most reminds me of Roger's style is Jens Kruger, and I would give anything to hear the two of them jam together.
The first four or five years I attended Clifftop, Roger had a big camp on Geezer Hill just down the path from my little Banjo Hell. He was generous with his music, sharing it with whoever came by. He would host a big jam every day, all were welcome, no matter what level a player you were. Besides being a brilliant musician, he is quite a character, with an outrageous sense of humor. When the last days of Clifftop neared, he would pack his gear and head to Galax, where I understand he also reigned supreme. Eventually, he stopped coming to Clifftop, and just went directly to Galax, and I can tell you he was sorely missed. I understand from a mutual friend that he has had some medical problems in recent years, but is still picking the banjo. I hope he lives forever.