One in a series of double LP compilations Chess put out in the 70s collecting some of the classic blues sides in their catalog. As near as we can tell, these raw folk blues numbers were mostly issued as 45s, featuring Sonny Boy
on vocals and harp, with sidemen that include Muddy Waters, Robert Jr Lockwood, Willie Dixon, Otis Spann and others. 28 tracks in all, including "One Way Out", "Don't Lose Your Eye", "Keep It To Yourself", "Sad To Be Alone", "Let Your Conscience Be Your Guide", "I Never Do Wrong", "I Don't Know", "Don't Start Me Talkin'", "Bring It On Home", "Key To Your Door", "All My Love In Vain", "Nine Below Zero", "Got To Move", "She Got Next To Me", "Keep Your Hand Out Of My Pocket", "Too Close Together", "Like Wolf" and "Santa Claus".
(Cover has some wear and light seam splitting.)