"The Enchanted Tree of Oz" is a deliberately-unfinished Oz short story by Ruth Plumly Thompson. It was part of a radio-show contest promotion of the Oz books in the 1920s. In 1926 and 1927, Oz stories were read on the Topsy Turvy Time children's program on WMAQ in Chicago, as one of publisher Reilly & Lee's publicity tactics for the Oz books. Thompson wrote an unfinished story for the program. Her story stops just as Dorothy and the Scarecrow disappear into the "Tree of Whutter Wee." The idea was that the child listeners would create their own endings to the story and submit them for prizes.