The Nighthawks:

Popular name for a blues band, this. This was a late 60's/early 70's (?) outfit from the U.K.

Lineup included at times:
Wolfie Witcher: vocals, harp
Ron Skinner: bass. Formed Dynaflow Blues after leaving Shakey Vick's Big City Blues Band in April '68 (prior to the Shakey Vick debut album "Little Woman...") and then went to the Nighthawks.
Mel Wright: drums. Same history as Ron Skinner.