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/thin bends scattered around the outer margin area, a bit of stress creasing/paper tightening along the bottom margin and a few tiny pin-prick ink spots/tiny scuffs here and there, it is a pretty sharp-looking example of this always in-demand late-'66 Moscoso image from the Avalon.