Too bad the Ed Blackwell LP on Sweet Earth never got released. Maybe there's a chance some intrepid label will put the tapes out on CD...
Great photo of Marion, by the way.
In addition see thread “The art of the solo on wind instruments”, 2015 -17! https://www.organissimo.org/forum/topic/77288-the-art-of-the-solo-on-wind-instruments/ Unfortunately, not all scans are available anymore.