Original 1st printing 11 x 17" concert poster for Big Brother & the Holding Company (featuring Janis Joplin) appearing with Sweetwater and Taj Mahal at the Valley State College Gymnasium in Northridge, CA on 5/12/1968.
Art by Rick Griffin, image is part of the Pinnacle/Shrine series.
Medium flat index stock poster is in absolutely STUNNING mint/near mint to near mint (A/A- to A-) condition; with the exception of a nearly-invisible surface/edge ding or two, it is an essentially flawless example of the hard-to-find 1st printing version of this Griffin classic from a small Los Angeles-area college show.
AWESOME underground comix-inspired RG design on this one, very heavy on the eyeball imagery.