In 1938, in Pick Britches Valley, North Carolina, a young mountaineer sang a ballad about an infamous murder for a visiting singer and collector of folk songs. Twenty years later, nearly every American within range of a radio was hearing about Tom Dooley from the Kingston Trio - and a folk tradition dating back to the days of the minstrel show had intersected with the emergent youth culture of the late-50s. How did Tom Dooley get from Pick Britches...