Eric Clapton and Howlin' Wolf collaborated on Howlin' Wolf's 1970 London Sessions album. The album was recorded in London and produced by Norman Dayron. It features Clapton on guitar and other notable musicians such as Steve Winwood and Bill Wyman. 

The album consists of eight tracks, including "Rockin' Daddy" and "Going Down Slow". It was released in 1971 and received critical acclaim for its bluesy sound and the powerful vocals of Howlin' Wolf. 

Overall, the collaboration between Eric Clapton and Howlin' Wolf on the 1970 London Sessions album was a success. It showcased the talents of both musicians and remains a classic blues album to this day.