Ceiling relief in the Chicago HOB "Walk of Legends".
I am kicking myself now that I didn't take note of who this is!
Looked for it again in 2010 and discovered it may no longer be there!
But my original image yielded some clues! The frame has "East West" stamped on it,
referring to a song originated by Nick Gravenites and expanded on by Michael Bloomfield.
The track was then recorded by the Paul Butterfield Blues Band... meaning this image is
most likely that of the late, great Chicago blues harmonica player, Paul Butterfield.