Kooper, Bloomfield and Dylan

I recently saw and had a chance to talk to Al Kooper when he was appearing in
SF at a Blues festival. There was a very poor tribute to Michael Bloomfield but
that's a story for another time. I asked Kooper a question that has always been
on my mind, which came first, 4th Time Around or Norweigen Wood. He told me
that Dylan taught the melody to John Lennon. Well, at least that's one less
thing floating around my mind.