Pair of original 1st printing 8&1/2 x 11" concert flyers (one full-color, one 3-color/no black test proof) for Quicksilver Messenger Service appearing with Big Brother & the Holding Company (featuring Janis Joplin) and the Congress of Wonders at Winterland in San Francisco, CA from 12/16-17/1966 and at the Shrine Expo Hall in Los Angeles, CA on 12/18/1966.
Design by Gut, image (Winterland) is featured in the Art of Rock on page 194 (plate 2.207).
Thin flat stock flyers are both in fantastic near mint (A- to A-/B+) condition; aside from a few soft handling dings here and there, they are pretty much just as crisp/bright as they come.
Very cool pair of late-'66 Quicksilver/Big Brother concert flyers!