When I worked at a folk club in Tucson, the Greenbrier Boys came through town as opening act to Joan Biaz. Ralph Rinzler told me that the three of them, (he, Bob Yellin and John Herald) were not a group but hung out at Washington Square jammin', during early folk days. Joan Biaz was in a studio recording and was feeling down so one of the record label people ran down to Wash Sq and grabbed the three of them to come play some Bluegrass for Joan as she liked that kind of music. So they gave themselves a name and went on tour with Biaz. Ralph would laugh because they traveled around the country in a Nash Rambler and Mike Seeger and the New Lost City Ramblers were traveling around the country in a Chevy Greenbrier.