Automotive
“Meet the Zero-doccus. He is the first if a group of terrible beasts that are being turned loose in the advertising of Essolube, Standard Oil Company (New Jersey) products,” reports the December 8, 1932, Printers’ Insider, an advertising trade journal.
http://www.collectorsweekly.com/articles/when-the-wild-imagination-of-dr-seuss-fueled-big-oil/
http://aoghs.org/editors-picks/seuss-the-oilman/