This is a medley of three songs, all from the 'teens, I think. I can't swear by the names, but here's what I think they are:
1) Walkin' with my Baby on a Sunday Afternoon
2) When you wore a Tulip and I wore a big red rose (or is it yellow rose??--senior moment!)
3) AAAUGH-- I know the tune, I can't think of the words!!
I think by now that they are all in the public domain.
My suggestion? Use John Hartford's Delta Queen Waltz. I have recordings of Travis playing it, and I'm sure others have them too.
David D.