The founder of the first McDonald’s “Speedee Service Restaurant” outside Los Angeles, California, the McDonalds brothers lent their name and expertise to early developments in burger stands. But it was not until Ray Kroc bought their restaurant and began franchising McDonald’s, in the 1960s, that the brand became ubiquitous in the United States—one of the largest corporations in the company, and a bellwether for the state of the American food-prep industry.