One day in 1994, John McCusker was conducting his regular jazz tour when he came to Edward “Kid” Ory’s old home on Jackson Avenue. As he delivered his talk, he noticed something bothersome. “One of the guys in the tour was shaking his head,” McCusker recalls. “The representation I gave of Kid Ory was the one I had gotten from most of the books out there. Which is that yeah, Kid Ory was a...