This poster is also known as Neon Rose #4 (NR-4).
The 1st printing poster lacks the white printing flaw found in the reprint. It was printed before the concert and measures 14" x 20".
The 2nd printing poster is characterized by a white printing flaw in the orange top margin 2 1/4" from the right edge. There is some color variation throughout this run. It was printed after the concert and measures 14" x 20 1/8".
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.