Credit

• Art Direction [Reissue] - Vartan (4)
• Baritone Saxophone - Donald Hawkins (A1, A2, A6, B2, B4 to B6)
• Bass - Willie Dixon (A1, A2, A6, B1, B5, B6)
• Bass Guitar - Buddy Guy (B2, B4)
• Cover [Original] - Don S. Bronstein
• Design [Repackage] - DZN, The Design group
• Drums - Earl Phillips (A3 to A5, B3)
• Drums - Junior Blackman (B1)
• Drums - Sammy Lay
• Edited By - Ron Malo
• Electric Bass - Andrew Palmer (2) (A1, A2, A6, B5, B6)
• Guitar - Howlin' Wolf (B1)
• Guitar - Hubert Sumlin (A1 to B2, B4 to B6)
• Guitar - Jody Williams (A3, A4)
• Guitar - Otis "Smokey" Smothers (B3)
• Guitar - Willie Johnson (4) (A5, B3)
• Mastered By - Greg Fulginiti
• Piano - Hosea Lee Kennard (A3 to A5, B3)
• Piano - Lafayette Leake (B2, B4)
• Piano - Johnny Jones
• Producer - Marshall Chess
• Research [Reissue], Coordinator [Reissue] - Andy McKaie
• Sleeve Notes - Chris Morris (15)
• Tenor Saxophone - Arnold Rogers (A1, A2, A6, B5, B6)
• Tenor Saxophone - J.T. Brown (B1, B2, B4)
• Transferred By [Digitally] - Doug Schwartz
• Written-By - Chester Burnett (A1 to A6, B3, B5, B6)
• Harmonica - Howlin' Wolf (A3 to A5)
• Sleeve Notes - Willie Dixon
• Vocals - Howlin' Wolf
• Written-By - Willie Dixon (B1, B2, B4)