This is fantastic. I learned a while ago (through Malcolm Taylor) that what was collected from a singer isn't necessarily what ended up in song books. Not just bowdlerisations (is that the word?) and 'improvements' of lines, but also whole verses added or even omitted at will for no apparent reason. For those who care about such things, now we can see just what the singer did or did not sing and the omissions of collectors. Thank you so much.