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Dr Pepper was created, manufactured, and sold beginning in 1885 in Waco, Texas. It is believed that Charles Alderton, a pharmacist working at Morrison’s Old Corner Drug Store, was the inventor of the drink, though no one knows how Dr Pepper got its name. When Alderton found a combination of fruit syrups that he liked, he had the store’s owner, Morrison, taste it, and soon the drink was a hit at the store’s soda fountain. Morrison and Robert Lazenby, a beverage chemist, debuted their drink to almost 20 million people at the 1904 World's Fair Exposition in St. Louis. "Old Doc," a typical country doctor character with monocle and top hat, became the Dr Pepper trademark character in the 1920s and 1930s. Dr Pepper's slogan in the 1950s was "the friendly Pepper-Upper.” To broaden its popularity across the nation, Dr Pepper hailed itself as "the most misunderstood soft drink" in the 1960s, and then in 1977, Dr Pepper advertising was marked by the famous "Be a Pepper" campaign. The slogan in the 2010s is “Always one of a kind,” which coordinates with the emphasis on the 23 fruit flavors that give Dr Pepper its unique taste.