Blues guitarist from Oakland, California. Also recorded it as Mercury Blues. Not to be confused with Hosie Dwine Craven's Mercury Boogie (on Mercury).
Steve Miller Band [as Mercury Blues at the Monterey Pop Festival and in hippie film Revolution]
American Blues [idem; pre ZZ Top with Frank Beard & Dusty Hill]
David Lindley [idem]
Canned Heat [idem]
Dave Berry [all as Mercury Blues]