Muddy Waters from 1946. Originally recorded for Aristocrat Records (later to become Chess). Also found on various compilations and boxsets. This is from an anthology called "Folk, Gospel & Blues". See Stefan Wirz discography online for info on all Muddy Waters recordings. I copy and paste this from his comment below: "rec. September 27, 1946 in Chicago, IL; Muddy Waters, voc, g; James Clark, p; Homer Harris, g; Ransom Knowling, b; Judge Riley, dr"