In 1961, the Frito Company, founded by Charles E. Doolin, and Lay's merged to form Frito-Lay Inc., a snack food giant with combined sales of over $127 million annually, the largest of any manufacturer. Shortly thereafter, Lay's introduced its best-known slogan "betcha can't eat just one". Sales of the chips became international, with marketing assisted by a number of celebrity endorsers. [citation needed]