Last date by Dolphy is quite cool. It was his last recording
I would like also to mention an underrated free-jazz label, the Paris-based Byg-Actuel. They recorded sessions in Paris from some of the most prominent free-jazz players of the late 60's. Here you can check their catalog:
http://www.jazzdiscography.com/Labels/byg.htm
I've got some of them and they are killer. Worth discovering.