Original 1st printing 14&1/8 x 22&7/8" concert poster for the Jim Kweskin Jug Band (with Maria Muldaur) and the Peanut Butter Conspiracy with the Sparrow (proto-Steppenwolf) at the Fillmore Auditorium in San Francisco, CA on 6/2-3/1967. Art by Bonnie MacLean, image is # 66 in the Bill Graham/Fillmore series. Medium-thick flat index stock poster is in excellent (B+) condition; a tiny edge tear in the bottom margin, a slightly creased lower right corner and a touch of handling, otherwise a fine-looking example of this classic 'Bonnie MacLean poster with a really sweet design.