Bill Graham loved Latin dance music, and the beat of Brazilian jazz guitarist Bola Sete proved to be enormously popular for the Fillmore crowd too, at this three night gig. Country Joe & the Fish and Buffalo Springfield swirl and pool around Wilson's female nude as she parts the stage curtain.
The pre-concert 1st printing is identified by its granular pattern, particularly noticeable in the purple ink. The stock displays fine vertical rows, and on some of these 1st printing posters, there is variation within the green because the "split fountain technique" was used. Some copies contain a fine "hair" springing from the woman's right eyebrow, while some have no hair. It measures 13 7/8" x 24 11/16". Most of the 1st printing posters have ink on their reverse as a result of coming into contact with the front of freshly printed posters.
The 2nd printing has a consistant dark green "hair" springing from the woman's right eyebrow. The stock used for this printing lacks the granular, textured look of the 1st; it is indiscriminate in comparison. The green is darker in color, and it measures 13 15/16" x 24 5/8". This reprint was produced after the concert.
The post-concert 3rd printing omits the above mentioned green eyebrow hair, and displays blacker and darker "Bill Graham Presents" credits and details. There is a horizontal pattern to the stock used, and it casts a slight sheen under bright light. It measures 13 7/8" x 24 5/8".
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.