Alton Kelley was an American artist and graphic designer, best known for his work in the psychedelic art movement of the 1960s. He collaborated with other artists, including Stanley Mouse, to create iconic concert posters for bands like The Grateful Dead and Jefferson Airplane. His vibrant and intricate designs captured the spirit of the counterculture era. Kelley's art often featured bold colors, surreal imagery, and a distinctive style that became synonymous with the psychedelic aesthetic. He played a significant role in shaping the visual identity of the San Francisco music scene, leaving a lasting impact on both art and music culture.