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 very good to excellent (B/B+ to B+) condition; aside from a series of VERY soft (and somewhat hard to see) horizontal roll bends traversing the image area, a hint of toning around the outer margin area (*and a fair amount on the reverse), a tiny edge nick or two and a couple of thin stress bends hiding within the image area, otherwise fine.
A REALLY nice-looking example of the 1st printing "Motherload" poster (which have been increasingly difficult to come by in recent years).