"Isn't "right-wing folk" an oxymoron?? "

Actually, it is far from being an oxymoron. The early roots of the folk revival were very conservative and attempted to preserve a history that might not have ever really existed. Look at Cecil Sharp and his vision of an idylic country life or even Henry Ford and his preservation efforts. John Lomax was very conservative as well.   It really wasn't until the 1940's when the "left" recognized that the folk movement could be co-opted to get the message out. The influence of the left, at least in this country, really had a major impact and the conservative side seemed to diminish - unless you get to a bluegrass festival!!!