Dear Jerry and Norrie, The Preacher Rollo (Rollo Laylan) sides on Jazzology JCD-51 (which I have) are from Mutual Network broadcasts and not from the MGM sessions. The JCD-51 band features Tony Parenti. Tommy Justice, Jerry Gorman, Marie Marcus, Al Matucci and Rollo. I am in a bit of of a rush at the moment, but have (I think) full info somewhere if wanted. Kind regards, Bill.