Credits

Champion Jack Dupree: Piano, Vocals
Alexis Korner: Guitar
Aynsley Dunbar: Drums
John Mayall: Guitar, Harmonica, Piano, Vocals
Peter Green: Guitar, Vocals
Eric Clapton: Guitar, Vocals
Curtis Jones: Piano, Vocals
Eddie Taylor: Drums
Otis Spann: Piano, Vocals
Gus Dudgeon: Engineer
Mike Vernon: Producer, Original Liner Notes
Vic Smith: Engineer
Steve Anglo: Organ
Tony McPhee: Guitar
Jack Fallon: Bass
Keef Hartley: Drums
Malcolm Pool: Bass
Ransom Knowling: Bass
John McVie: Bass
Little Willie Smith: Drums
Decca Publicity Art Dept.: Photography, Sleeve Design
Robert Stace: Printing