Peter Max was a famous American pop artist known for his vibrant, psychedelic style incorporating geometric and organic shapes. In the 1960s, he designed album, book, and magazine covers as well as advertisements. He became widely popular for his colorful, cosmic-themed artwork and was commissioned to design stamps and other products. Max's style was inspired by antique posters and explored themes of peace, love, and the space race. He is now recognized as a pioneering pop artist who helped popularize psychedelic and radical art styles in the 1960s.