I have never heard Bud and Travis [I'm from UK] but their name arose on the John Stewart list [bloodlines] that I am on when Travis came to a Kingston Trio Fantasy Camp a couple of years ago in Scottsdale. As I recall he and his wife went to a couple of the sessions and one of the Bloodliner dinners at which he gave an impromptu performance which was excellent given his age. He is a firm favourite of many of my US friends on bloodlines and one or two of them still see him around in Arizona.