paris in the late 60s produced dozens of those unusual combinations... (by memory i'd say pan-african festival wasn't one of them though)... many familiar discs have unusual combinations on them... john zorn or grachan moncur with john patton, mingus or coltrane with ellington, buzz gardner with frank zappa/rene thomas (guess seeing the name a second time is surprising no matter where you see it first), chris mcgregor with nick drake, all those west coast jazzers on tom waits albums, say, shelly manne (iirc)
Just did a quick look at what I have handy and Philly Joe Jones appears on at least a Poem for Malcolm, Yasmina a Black Woman (w/ Art Taylor on rhythm logs) and Blase, while Mobley appears on all of these except Blase.