Original 1st printing 13&1/2 x 16&1/2" concert poster for Big Brother & the Holding Company (featuring Janis Joplin), appearing at with the Good Nabors on the campus of California State University (East Bay) in Hayward, CA on 10/27/1967.
 
 Designer unknown/not credited, medium-thin textured stock poster is in very good to excellent (B/B+ to B+) condition; there are staple/pin holes in all four corners and in the top center margin, along with a minor degree of of handling wear, a few stray pin-prick surface spots/smudges/tiny stress bends hiding within the image area and an odd triangular-shaped area of toning on the reverse (doesn't show through to the front), otherwise fine. 
 
 ULTRA-uncommon late-'67 Big Brother concert poster from a fairly small East Bay college show, we have the flyer/handbill for this show listed separately.