1894-1964. US abstract painter. He used hard-edged geometric shapes in primary colours and experimented with collage. Much of his work shows the influence of jazz tempos. In the 1920s he produced paintings of commercial packaging, such as Lucky Strike 1921 (Museum of Modern Art, New York), that foreshadow Pop art. His early abstracts reflect the impact of Cubism, and he was deeply influenced by the Armory Show in New York 1913. He often used numbers or letters as the focus for his compositions.