Redpop introduced strawberry soda in its initial line up. In the 1960s, the name of the strawberry soda was officially changed to Red Pop. 'Red Pop' was used in Christopher P. Curtis' book, Bud, Not Buddy, when Lefty Lewis said, "Might even have some extra Red Pop." Big Red introduced its 'Sun Tang Red Cream Soda' in 1937. In 1959, this was shortened to 'Sun Tang Big Red' and in 1969 it was further shortened to 'Big Red'.