Peterson came up with idea for the signature McDonald's breakfast item in 1972.

He began his career with McDonald's as vice president of the company's advertising firm, D'Arcy Advertising, in Chicago. He wrote McDonald's first national advertising slogan, "Where Quality Starts Fresh Every Day," and eventually became a franchisee

I remember as a little boy eating Egg McMuffins and asking my parents to make them at home cause I wanted them and no one would take me to get some.