Rick Griffin was an American artist and one of the leading designers of psychedelic posters in the 1960s. As a contributor to the underground comix movement, his work appeared regularly in Zap Comix. Griffin was closely identified with the Grateful Dead, designing some of their best-known posters and album covers such as Aoxomoxoa. His work within the surfing subculture included both film posters and his comic strip, Murphy.
In the mid-1960s, he participated in Ken Kesey's Acid Tests. His first art exhibition was for the Jook Savages, celebrating the one-year anniversary of the Psychedelic Shop on Haight Street. Organizers for the Human Be-In saw his work and asked him to design a poster for their January 1967 event. Chet Helms was also impressed by Griffin's work and asked him to design posters for the Family Dog dance concerts at the Avalon Ballroom, which led Griffin to create concert posters for the Charlatans. In 1967, Griffin, Kelley, Mouse, Victor Moscoso and Wes Wilson teamed as the founders of Berkeley Bonaparte, a company that created and marketed psychedelic posters. Griffin returned to Southern California in 1969, eventually settling in San Clemente.