The 1st printing measures 14 3/16" x 18" and has "The Bindweed Press, San Francisco" credit in the lower right hand corner. It was printed before the concert.
The post-concert 3rd printing measures 14" x 20 3/8" and deletes the Bindweed credit, adding instead "(c) Family Dog Productions, 1725 Washington Street, San Francisco" to the lower right hand corner. "No. 38-3" is in the lower left hand corner.
The 4th printing measures 14" x 20" and has "No. 38-4" in the lower left hand corner, and "1967 (c) Family Dog Productions 639 Gough St., San Francisco, Calif. 94102" in the lower right hand corner. It was printed after the concert.
No 2nd printing is known to exist.
Born in Spain, Victor Moscoso was the first of the rock poster artists with serious academic training and experience. At the Avalon Ballroom in San Francisco, Moscoso saw rock posters and decided that he could "make some money doing posters for those guys." In 1966, he began designing posters for the Avalon Ballroom; and under his own imprint, Neon Rose, a series for the Matrix, a San Francisco nightclub. Moscoso's style is most notable for its visual intensity, which was obtained by manipulating form and color to create optical effects. He used clashing, vibrating colors and deliberately illegible psychedelic lettering to demand attention.