The song most definitely is about Bob Dylan, by the way. It could hardly be any clearer, even though Joan played a little mind game on him once in '74, asserting that it was about "her husband" (David Harris). Not a chance. It was about Bob.

She did 2 other songs about Bob on that same album, as I recall, or around that same time. One is "Winds of the Old Days" and the other is "Oh, Brother!"

She also did a lovely song for Sara Dylan called "Still Waters at Night".