.
Michael Fitzgerald's chronology of Blakey's Jazz Messengers indicates Woody Shaw, Carlos Garnett, George Cables and Jan Arnet.
Gene Santoro's book on Mingus 'Myself when I am real' says he played in June 1969 at the Village Vanguard with Bill Hardman, Charles McPherson, Billy Robinson on tenor and Dannie Richmond and had the same group at Cliff Walk Manor.
Santoro isn't always a good source for this sort of information (read the section on Mingus at Monterey), but Brian Priestley lists the same personnel in his book.