Norman Rockwell left high school at the age of 15 to attend the Chase School of Art in New York City and then the National Academy of Art. He produced his first cover for the Saturday Evening Post the following year. Rockwell joined the U.S. Navy in World War I and returned from the war to live in New Rochelle, NY. During the 1920s, he became a leading Post cover illustrator. He is best known for his more than 300 covers for the Saturday Evening Post, depicting common people doing common things. In Spring 1943 he finished his Four Freedoms Paintings, of which millions were produced.