Richard Alden "Rick" Griffin (died on June 18, 1944) was an American artist and one of the leading designers of psychedelic posters in the 1960s and a contributor to the underground comix movement.
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. 
