ANd this 1920s 'bloc' is a considerable stumbling block when it comes to (casual?) research on a song. The typical practice when presenting a song in the "folk" music context has been, similarly to the Traditional Ballad Index above, to say, "Here, for more info on this song, see X, Y, Z, Colcord, Shay, Bone, Hugill, Sampson, Sandburg, whatever." But when we turn to many of those, they are all telling us basically the same thing -- what they got from one another's books -- which appears to be correct because "most people" are saying it. Who is going to critique it?