The very first Dairy Queen franchise was in Joliet, Illinois, right on Route 66 at 501 N. Chicago Street.
Back then, in 1938, the idea of franchising was unheard of, but there was lots of potential so it began with the first one in Joliet. By the time the United States entered World War II, there were nine franchise Dairy Queen stores.
Some important Dairy Queen dates:
1940-- Reached 100 stores
1949-- Introduced malts and shakes
1951-- introduced banana splits
1953-- First store in Canada
More to Come. --route 6