Title: Standard Oil Company - Essolube advertisement
Before Theodore Seuss Geisel found fame as a children’s book author, the primary outlet for his creative efforts was magazines. His first steady job after he left Oxford was as a cartoonist for Judge, a New York City publication. In 1927 one of these cartoons opened the way to a more profitable career, as well as greater public exposure, as an advertising illustrator.
via Official Web site of the University of California, San Diego