"Dr. Seuss Goes to War"

Did you know that Dr. Seuss (a.k.a. Theodor Geisel) once drew political cartoons of Hitler and Mussolini? Historian Richard Minear has collected over 200 of these cartoons and has published them in a book titled Dr. Seuss Goes to War. Is there any connection between these political cartoons and Dr. Seuss' later works? Read more about them from CNN.