This looks interesting, from Wolfgang's vault:
"For its afternoon lecture/demonstration program at the 1960 Newport Jazz Festival, promoter George Wein gathered some of the prominent names in blues music, including Muddy Waters, John Lee Hooker and Jimmy Rushing, each representing a different aspect of this quintessentially American roots music. Narrator Langston Hughes, poet laureate of the Harlem Renaissance of the 1920s as well as a witness and chronicler of the Jazz Age, provided insightful commentary for the assembled Newport crowd, along with Dr. Harry Oster. Both esteemed authorities preside over an entertaining and enlightening?"
My eyes locked on Harry Oster's name, but unfortunately it looks as though he only gets 34 seconds of fame on this recording. But Langston Hughes, wow! And Butch Cage is on there, doing .44 Blues.
http://www.wolfgangsvault.com/goodbye-newport-blues/concerts/newport-jazz-festival-july-03-1960-afternoon-show.html?utm_source=NL&utm_medium=email&utm_campaign=100216
Usually you have to register to listen, but it's free.
Lindy