Hank O'Neal, Esther Bubley and the Lost Negatives

On June 17, 1952, Clef/Norgran Records owner and producer Norman Granz was in the control room of Radio Recorders at 7000 Santa Monica Boulevard. He had assembled the very best musicians in jazz at the time for one of his jam sessions—a record date that would include songs that ran up to 17 minutes each, uninterrupted. [Photo above, from left, of Ben We…