Official artist-issued (1985 commemorative ) 20 x 26&1/4" hand-pulled silkscreen concert poster for rock n' roll pioneer Bo Diddley appearing with Big Brother & the Holding Company (featuring Janis Joplin) at the Avalon Ballroom in San Francisco, CA from 8/12-13/1966.

 Art by Stanley Mouse and Alton Kelley, image ("Earthquake") is # 21 in the Family Dog/Avalon series. This edition has been HAND-SIGNED and numbered 142/200 in pencil by Mouse and is currently designated RP-5.

 Extra-thick oak-tag stock silkscreen serigraph is in near mint (A- to A-/B+) condition; other than a couple of minor edge dings, a hairline pinch bend/soft crease and a nearly-invisible soft fingerprint smudge along the top margin, this example is just about as sharp as they come. 

 An absolutely GORGEOUS ARTIST-SIGNED extra-large silkscreen featuring the "Earthquake" image.