The 1st printing poster has a rich brown background which matches the postcard. It was printed on beige stock before the concert and displays small vertical rows on the reverse side. It measures 14" x 21 13/16".
The post-concert 2nd printing displays a lighter shade of brown. It was printed on off-white stock, but displays the same vertical rows described in the 1st printing. On the bottom right hand corner is a very small area that reflects a black dot screen effect. It measures 13 15/16" x 21 3/4".
The 3rd printing is the same lighter shade of brown and displays the same bottom right hand dot screen effect as the 2nd printing. It is printed on beige stock like the original poster, but does not have vertical rows in the paper stock. It measures 14" x 21 13/16" and was printed after the concert.
Trained as a commercial artist, Bob Fried came to San Francisco from New York to study at the Art Institute and work as a free-lance designer. In 1966, he began to look at the rock posters that were appearing throughout the Bay Area. Encouraged by Victor Moscoso, whom he met at the Art Institute, he began to create his own posters. He wanted to keep them simple to convey feelings of dimensional space, similar to an acid trip. Fried attempted to convey the feeling of the plasticity of time that was his experience on LSD.