Original 1st printing 8&1/2 x 11" concert flyer for Big Brother & the Holding Company (featuring Janis Joplin) appearing with Lee Michaels and the Oxford Circle at the Avalon Ballroom in San Francisco, CA from 12/9-10/1966.
 
 Art by Victor Moscoso, image ("Swirley Eyes") is # 38 in the Family Dog/Avalon series.
 
 Thin flat stock flyer is in excellent (B+) condition; aside from a few stray pinch dings scattered along the top margin, a tiny  diagonal bend in the top right corner tip and a couple of tiny pin-prick ink spots scattered along the lower right margin, it is a GORGEOUS example of this oft-requested late-'66 Moscoso image from the Avalon.