Original 1st printing (slate-blue background, no "W") 14&1/8 x 21" concert poster for Jefferson Airplane and the Grateful Dead appearing with Mongo Santamaria at Winterland from 5/2-3/1969, plus Mongo Santamaria headlining over Cold Blood and the Elvin Bishop Group at the Fillmore West on 5/1 & 5/4/1969. (*all shows held in San Francisco)
 
 Art by Randy Tuten, image is # 171 in the Bill Graham/Fillmore series.
 
 Medium glossy-coated index stock poster is in excellent (B+) condition; just a few thin edge creases along the lower left margin, along with a stray pinch ding/fingerprint/thin surface scratch or two hiding within the image area, a couple of slightly bumped corner-tips and a couple of tiny edge dings along the right margin, otherwise fine.
 
 VERY nice-looking 1st printing example of this classic '69 JA/GD image from the Bill Graham series.