US
A.k.a. Richard Alden Griffin
Richard Alden "Rick" Griffin (June 18, 1944 – August 18, 1991) 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.