BG042 documents Grace Slick's move from Great Society to rival band, the Jefferson Airplane. Featured here with Chicago bluesman Junior Wells, Slick joined the Airplane in time for their release, "Surrealistic Pillow" and brought with her two songs,"White Rabbit" and "Somebody to Love." The lettering on Wilson's poster is becoming denser, a style that the artist assured a skeptical Bill Graham would make "...people stop and look at it."
The postcard was printed after the concert with the 2nd printing of the poster. It displays the same bright purple color and the same chocolate brown dates and measures 4 1/2" x 7 1/2".
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.