Animal House was the first film produced by National Lampoon, the most popular humor magazine on college campuses in the mid-1970s. The periodical specialized in satirizing politics and popular culture. Many of the magazine's writers were recent college graduates, hence its appeal to students all over the country. Doug Kenney was a Lampoon writer and the magazine's first editor-in-chief. He graduated from Harvard University in 1969 and had a college experience closer to the Omegas in the film (he had been president of the university's elite Spee Club). Kenney was responsible for the first appearances of three characters that would appear in the film, Larry Kroger, Mandy Pepperidge, and Vernon Wormer. They made their debut in 1973's National Lampoon's High School Yearbook, a satire of a Middle America 1964 high school yearbook. Kroger's and Pepperidge's characters in the yearbook were effectively the same as their characters in the movie, whereas Vernon Wormer was a P. E. and civics teacher as well as an athletic coach in the yearbook.