Original 1st printing (2nd state/monochrome version) 22&5/8 x 14&1/4" concert poster for Big Brother & the Holding Company (with Janis Joplin) appearing with Quicksilver Messenger Service, the Charlatans and the Sparrow (proto-Steppenwolf) at the Tamalpais Mountain Amphitheater in Marin County, CA on 4/8/1967.
Art by Allen "Gut" Terk, medium-thick flat vellum stock poster is in GORGEOUS near mint (A- to A-/B+) condition; just a couple of ultra-soft pinch dings scattered around the outer margin area, a whisper of edge toning and a couple of ultra-tiny corner-tip bends, otherwise it is an absolutely STUNNING example of this early-'67 Big Brother/Quicksilver poster from Marin County.