Acorn -- He wore glasses 'cause he was only what today we would call "legally blind," but not totally sightless. He squinted habitually and as I understand it, one of his side men one day told him that he looked like a blind lemon, and it stuck.

Here's an off-the wall thought. Jefferson hung out with Leadbelly at some period in their peripatetic lives. Is it possible that that is who does the other cut? At least there are a lot of Leadbelly recordings to compare the voice to.

To which to compare the voice.
With which to ....

Oh, OK, I'm going to my room now. I said it was an off-the-wall idea.

CC