Original 1st printing 8&1/2 x 11" concert flyer for Quicksilver Messenger Service appearing with Big Brother & the Holding Company (featuring Janis Joplin) and Country Joe & the Fish at the Avalon Ballroom in San Francisco, CA from 11/25-26/1966.
Art by Victor Moscoso, image is # 36 in the Family Dog/Avalon series.
Thin flat stock flyer is in good to very good (B to B/B+) condition; there is a bit of moisture discoloration/staining along the upper left margin, plus a pair of staple holes in the top center margin, a few light handling dings here and there, a tiny edge ding or two and a few soft scuff/rub marks hiding within the image area, otherwise fine.
An overall fine-looking example of this classic late-'66 Moscoso image from the Avalon. Check out the original radio spot for the show!