(Paul Butterfield with John Mayall - a sort of summit conference you could groove to)
I haven't seen this reissued anywhere, although I am probably wrong. But at the time (1967), it was only available in the UK, since there was a contractual problem with Butterfield's label (Elektra) and Mayall's (Decca UK). A four-track ep featuring a collaboration between John Mayall and his Bluesbreakers from England (with disputed reports of who played what during the sessions) and Paul Butterfield from Chicago (the town, not the band) - a sort of East Meets West.
The results were met with mixed results, due probably to inflated expectations these two were the be-all/end-all of white blues musicians which no amount of hype could justify, and the fact that the disc wasn't for export to the states. Instead, it was a good solid session with two giants of 60's blues and no pretense. Simple.
This cut "Riding on The L&N" is the second track off side one. Sounding fresh as ever.