Credits

Paul Butterfield: Harmonica, Vocals
Elvin Bishop: Guitar
Sam Lay: Drums, Vocals
Mike Bloomfield: Slide Guitar
Jac Holzman: Producer
William S. Harvey: Design, Photography
Pete Welding: Liner Notes
Mark Naftalin: Organ
Paul A. Rothchild: Producer, Recording Supervision
Leonard Heicklen: Photography
Mark Abramson: Recording Assistant, Assistant Producer
Jerome Arnold: Bass