Jogged my memory, Big Red. The name rang a bell. I'm pretty sure the banjo player who came to the party was indeed Jerry Walter. I had no idea of his background (Jack Armstrong?? I listened to Jack Armstrong when I was a kid!) and I was unaware that he had formed the group. I got the impression from what he said that he had joined the group later on, but I could have been wrong. I'm trying to recall a conversation that happened forty-two years ago. He was fairly quiet and modest, and seemed to be more interested in listening to us sing. He just sang the one song, Pretty Saro, and did such a nice, straightforward job of it that I decided to learn it myself. Thanks for the info.