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Dunkin' Donuts claims to be the "world's largest coffee and baked goods chain," serving 2.7 million customers per day at approximately 8,800 stores in 31 countries, which includes approximately 6,400 Dunkin' Donuts locations throughout the USA. The company was started by William Rosenberg at this store (above) on the Southern Artery in Quincy. They have become well known for their popular advertising campaigns. Below is the flagship store as it looked in 1951.