Much of that stuff (from the 2 albums) is now avaialable on Don't Say That I Ain't Your Man, Al Kooper's Columbia release.  The great Carmelita Skiffle is on there - with its perfect soloing like a Bach cantata all the way through.  Some is also on Nick's My Labors.  I have a feeling I am repeating what others have said, especially ...

Yes, his phrasing was unique to say the least.   He played against the rhythm and messed around with his own counter-rhythms.  Nobody else did that, least of all Clapton, who ''played the on-beats like a typewriter,'' according to Mr Naftalin.  As Al Kooper keeps pointing out, so many gigs were never recorded with the 1970's ...