Maybe I should show where my biases come from. I grew up in a family with no musical instruments, no phonograph, few songs, and sometimes no radio. I later discovered that I had been 'deprived', and have gorged myself on folksongs ever since. I have taken as my most valuable background that from texts and notes in collections of traditional songs published by the primary collectors, or by students and grad students of literature professors (e.g., Belden -Missouri, Brown -North Carolina. The latter usually know more about older printed texts. Phillips Barry usually knew just about everthing of earlier history of songs and tunes that he or his collaborators collected.)