Original 1st printing 8&1/2 x 11" concert flyer for Mike Bloomfield (Group) appearing with Copperhead (featuring John Cipollina) and Nimbus at the Matrix in San Francisco, CA from 8/24-25/1973.

Art by Mark T. Behrens, thin flat stock flyer is in very good (B/B+) condition; there is a 3&1/2" diagonal bend in the upper right corner/quadrant, along with a bit of light moisture rippling along the left margin, a couple of tiny diagonal pressure creases/bends in the upper left corner, a few soft crescent-shaped bends and tiny edge creases scattered around the outer margin area and a few soft smudges and light handling dings hiding within the image area, otherwise fine.

Somewhat uncommon late-period Matrix concert artifact featuring two of the most respected and influential guitarists of the late-'60's.