Dunkin' Donuts is an international coffee and donut retailer founded in 1950 in Quincy, Massachusetts by William Rosenberg. In 1946, William Rosenberg founded Industrial Luncheon Services as a company to deliver meals and "coffee break snacks" to customers in the outer reaches of Boston, Massachusetts. His business saw success and Rosenberg soon followed by opening up his first coffee and donut shop called "The Open Kettle". In 1950 he opened the first store known as "Dunkin' Donuts" Dunkin' began franchise operations in 1968 when William and Arleen Adie opened the first franchised Dunkin' Donuts opened in Chelmsford, MA. DD claims to be the "world's largest coffee and baked goods chain," serving 2.7 million customers per day at over 7,000 stores globally which includes approximately 5,300 Dunkin' Donuts locations in 34 states throughout the USA.
Source: Wikipedia, Dunkin' Donuts