Distinguished SOTW Member
Mobley was sort of like a saxophonists' saxophonist. He cut piles of records for Blue Note, but he was a sideman on many more. I'm guessing that he appeared live as a member of other player's groups more than he did under his own name. So you might do some research into bandleaders he played with at various times - like Art Blakey - and search for videos of those leaders and see if you can pick out Mobley as a sideman.