The pre-concert 1st printing is on gray stock and measures 14 1/8" x 20". A small number of variant originals were printed on white vellum.
The 2nd printing measures 14" x 20" on thick, gray 10 point stock. "4(2)" and the union logo #72 appear in the bottom left hand corner. This reprint was produced after the concert.
The post-concert 3rd printing (see FD004-3) is 14 1/8" x 20 1/2" on .007" uncoated white index. "No.4-3" is in the lower right corner, and the Washington Street address is in the lower left corner.
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.