The 1st printing of this poster pre-dates the concert and has a magenta Family Dog logo and a black background. It matches the stock of the postcards and measures 14" x 20 1/16".
The post-concert 2nd printing A displays a white Family Dog logo and black background. There is no pattern to the stock used for this version, and it measures 13 7/8" x 19 15/16".
The 2nd printing B has a magenta Family Dog logo, brown grainy background and measures 14" x 19 15/16". It was also printed after the concert.
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.