All the British rock stars will tell you that one of their main influences was Sonny Boy Williamson. In 1964 he tour the UK and performed on January 22nd at The Cavern in Liverpool (made famous by The Beatles) along with The Yardbirds and others. Eric Clpaton was a Yardbird at the time and sights Soony Boy as major influnce on his music. VG, folded and missing three corners but so rare and very presentable.