I typed before checking. "I'm a Man" was written by Elias McDaniel (Bo Diddley) and released by him in 1955. "Mannish Boy" was written by McKinley Morganfield (Muddy Waters) and Elias McDaniel and released by Muddy Waters in 1955. "Hoochie Coochie Man" was written by Willie Dixon and recorded by Muddy Waters in 1954. If anyone cares.