<P> As World War II began, Geisel turned to political cartoons, drawing over 400 in two years as editorial cartoonist for the left - leaning New York City daily newspaper, PM . Geisel's political cartoons, later published in Dr. Seuss Goes to War, denounced Hitler and Mussolini and were highly critical of non-interventionists ("isolationists"), most notably Charles Lindbergh, who opposed US entry into the war . One cartoon depicted all Japanese Americans as latent traitors or fifth - columnists, while other cartoons simultaneously deplored the racism at home against Jews and blacks that harmed the war effort . His cartoons were strongly supportive of President Roosevelt's handling of the war, combining the usual exhortations to ration and contribute to the war effort with frequent attacks on Congress (especially the Republican Party), parts of the press (such as the New York Daily News, Chicago Tribune, and Washington Times - Herald), and others for criticism of Roosevelt, criticism of aid to the Soviet Union, investigation of suspected Communists, and other offences that he depicted as leading to disunity and helping the Nazis, intentionally or inadvertently . </P> <P> In 1942, Geisel turned his energies to direct support of the U.S. war effort . First, he worked drawing posters for the Treasury Department and the War Production Board . Then, in 1943, he joined the Army as a Captain and was commander of the Animation Department of the First Motion Picture Unit of the United States Army Air Forces, where he wrote films that included Your Job in Germany, a 1945 propaganda film about peace in Europe after World War II; Our Job in Japan; and the Private Snafu series of adult army training films . While in the Army, he was awarded the Legion of Merit . Our Job in Japan became the basis for the commercially released film Design for Death (1947), a study of Japanese culture that won the Academy Award for Best Documentary Feature . Gerald McBoing - Boing (1950) was based on an original story by Seuss and won the Academy Award for Best Animated Short Film . </P> <P> After the war, Geisel and his wife moved to La Jolla, California, where he returned to writing children's books . He wrote many, including such favorites as If I Ran the Zoo (1950), Horton Hears a Who! (1955), If I Ran the Circus (1956), The Cat in the Hat (1957), How the Grinch Stole Christmas! (1957), and Green Eggs and Ham (1960). He received numerous awards throughout his career, but he won neither the Caldecott Medal nor the Newbery Medal . Three of his titles from this period were, however, chosen as Caldecott runners - up (now referred to as Caldecott Honor books): McElligot's Pool (1947), Bartholomew and the Oobleck (1949), and If I Ran the Zoo (1950). Dr Seuss also wrote the musical and fantasy film The 5,000 Fingers of Dr. T., which was released in 1953 . The movie was a critical and financial failure, and Geisel never attempted another feature film . During the 1950s, he also published a number of illustrated short stories, mostly in Redbook Magazine . Some of these were later collected (in volumes such as The Sneetches and Other Stories) or reworked into independent books (If I Ran the Zoo). A number have never been reprinted since their original appearances . </P> <P> In May 1954, Life magazine published a report on illiteracy among school children which concluded that children were not learning to read because their books were boring . William Ellsworth Spaulding was the director of the education division at Houghton Mifflin (he later became its chairman), and he compiled a list of 348 words that he felt were important for first - graders to recognize . He asked Geisel to cut the list to 250 words and to write a book using only those words . Spaulding challenged Geisel to "bring back a book children can't put down". Nine months later, Geisel completed The Cat in the Hat, using 236 of the words given to him . It retained the drawing style, verse rhythms, and all the imaginative power of Geisel's earlier works but, because of its simplified vocabulary, it could be read by beginning readers . The Cat in the Hat and subsequent books written for young children achieved significant international success and they remain very popular today . In 2009, Green Eggs and Ham sold 540,366 copies, The Cat in the Hat sold 452,258 copies, and One Fish, Two Fish, Red Fish, Blue Fish (1960) sold 409,068 copies--outselling the majority of newly published children's books . </P>

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