Wes Wilson's cool tones, arranged in a satisfyingly balanced design, advertise Quicksilver Messenger Service, The Grateful Dead, and The Mothers in this June 3 and 4 offering.
The pre-concert 1st printing has union logo 72 in the lower left corner and measures 14" x 20".
The 1967 post-concert 2nd printing has no union logo, but "#9" is located in the bottom right hand margin. This printing measures 14 1/16" x 20 1/4".
When the Avalon Ballroom and Bill Graham's Fillmore Auditorium began to hold weekly dance concerts, Wilson was called upon to design the posters. He created psychedelic posters from February 1966 to May 1967, when disputes over money severed his connection with Graham. Wilson pioneered the psychedelic rock poster. Intended for a particular audience, "one that was tuned in to the psychedelic experience," his art, and especially the exaggerated freehand lettering, emerged from Wilson's own involvement with that experience and the psychedelic art of light shows.