Citations:Simpsonsmania


 * 2008, Douglas Gomery, A history of broadcasting in the United States (page 327)
 * The Simpsons is also noteworthy for the enormous amount of merchandising it sparked. Simpsons T-shirts, toys, buttons, golf balls, underwear, and other licensed materials were everywhere at the height of Simpsonsmania in the early 1990s - and well into the twenty-first century.