I hadn't realized it was on CD. Good date; hope someone offers you one.
Bill Dixon's composition "Papers" is pretty interesting, and if I recall correctly it was the only work that he actually choreographed (for dance) himself, designed costumes for, etc. I want to say its 1960s NY performance included Coursil, Ric Colbeck and Joel Freedman but I don't have my notes handy. The quartet reading is really nice, at any rate.