Them, with Van Morrison, advertised one of its last 1966 U.S. tour appearances here with Marin County band, Sons of Champlin. Morrison grew into an incredible rock-poet solo talent. The Sons, fronted by master arranger and vocalist Bill Champlin, added trumpet a year later and quickly set themselves apart from guitar-dominated rocker bands.
The pre-concert 1st printing bears union logo 221 to the left of "Rexall Pharmacy". It measures 14" x 20".
The 2nd printing omits the union logo and measures 13 13/16" x 20 1/2". It was printed in 1967, after the concert.
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.