William Roger Dean is an English artist, designer, and publisher. He began painting posters and album covers for musicians in the late 1960s. The groups for whom he did the most art are the English rock bands Yes and Asia.

Richard Alden "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.