The Kingston Trio was one of the most prominent folk-pop groups of the 50s era. Their first album released in 1958 with their hit song Tom Dooley selling more than three million copies as a single.   I would have never guessed that this group started off as a San Fransisco Bay area nightclub act. I was certain they originated across the pond, as my ear detects a hint of an Irish or Scottish accent. Do you hear it, too? Oh well…where The Kingston Trio came from isn’t important, I suppose. Their popularity spanned about a decade before the group…