Original 1st printing 14 x 20" concert poster for Big Brother & the Holding Company (featuring Janis Joplin) appearing with the Sir Douglas Quintet and the Orkustra at the Avalon Ballroom in San Francisco, CA from 5/5-7/1967.
Art by Rick Griffin, image ("Motherload") is # 60 in the Family Dog/Avalon series.
Medium flat index stock poster is in good (B) condition; there are staple/pin holes in all four corners, along with a roughly 2" square area of creasing in the right center margin (over the "on" of "Avalon", a few light bends scattered around the outer margin area, a tiny nip out of the bottom right corner tip, a few handling bends here and there and a hint of toning, otherwise fine.
Very decent-looking example of the 1st printing "Motherload". The 1st printings of this poster have been surprisingly difficult to come by in recent years.