From 1946 to 1947, Grillo played a seminal role in the San Francisco branch of a movement that would revolutionize American art. Today, Grillo is acknowledged as perhaps the first and the purest "Action Painter" on the west coast, and one of the most influential painters of San Francisco's school of abstract expressionism. What is not know is that Grillo's efforts paralleled and in some cases anticipated developments in the East [coast of the United States]. -- Publishers' description.