I heard this song on today's Prairie Home Companion. Garrison Keillor was off and one of the co-hosts was Aoife ("E-Fay") O'Donovan. She has been posted on HB in the past playing the baritone ukulele on ocassion. I liked this song for the way that the song has little "walks" between the chords. So I thought I would see what I could find.
Riffstation has some potential, as it has guitar, ukulele and piano diagrams. I'll have to ask if a baritone version could be in the works.