Original 1st printing 13&5/8 x 22" concert poster for the Otis Rush Chicago Blues Band appearing with the Grateful Dead and Canned Heat (Blues Band) at the Fillmore Auditorium in San Francisco, CA from 2/24-26/1967.

 Art by (and SIGNED in pencil by) Wes Wilson, image is # 51 in the Bill Graham/Fillmore series (BG 51-OP-1 in the Eric King guide) 

 Medium flat vellum stock poster is in good/decent (B to B/B-) condition; there are staple holes/creasing in all four corner tips, along with a thin diagonal/vertical crease running along the lower left margin, a bit of surface rubbing and a tiny smear on "Bill Graham", a light to moderate amount of blue ink fading (a common issue with this poster when exposed to sunlight) and edge discoloration along the top/upper right margins, light handling wear and a set of tape pulls with a small bit of pencil scratch on the reverse, otherwise OK.

 Conditional issues aside, it's still very presentable and it has a really nice Wes Wilson signature.