I tried to google "Jim Craig," but all the references were to Foo Fighters (probably *not* who Don was referring to) and to the one Jim Craig I already knew about, goalie of the gold-medal-winning USA Olympic hockey of 1980 (subject of the fairly-recent film "Miracle").

brucie: The Boss ~ yes!

And that Joan Baez number is especially notable for having introduced many listeners to Dylan; I believe she was performing it before Bob started recording.