Land of Oz in the context of "Fictional universe"

Wicked (known in full as Wicked: The Untold Story of the Witches of Oz) is a musical with music and lyrics by Stephen Schwartz and a book by Winnie Holzman. It is loosely adapted from Gregory Maguire's 1995 novel Wicked: The Life and Times of the Wicked Witch of the West, which itself was based on L. Frank Baum's 1900 novel The Wonderful Wizard of Oz and its 1939 film adaptation. Set in the Land of Oz before and after Dorothy Gale's arrival from Kansas, the musical explores the complex relationship between Elphaba Thropp and Glinda Upland — the future Wicked Witch of the West and Glinda the Good, respectively — as they are tested by their contrasting perspectives, shared love interest, and reactions to the Wizard's corrupt rule, culminating in Elphaba's tragic fall.

Produced by Universal Stage Productions with producers Marc Platt, Jon B. Platt and David Stone, director Joe Mantello and choreographer Wayne Cilento, the original production of Wicked premiered on Broadway at the Gershwin Theatre in October 2003, after completing pre-Broadway tryouts at San Francisco's Curran Theatre in May and June of that year. Its original stars included Idina Menzel as Elphaba, Kristin Chenoweth as Glinda, Norbert Leo Butz as Fiyero, and Joel Grey as the Wizard. Despite mixed reviews, the production won three Tony Awards and seven Drama Desk Awards, while its original cast album received a Grammy Award.

The Oz books form a book series that begins with The Wonderful Wizard of Oz (1900) and relates the fictional history of the Land of Oz. Oz was created by author L. Frank Baum, who went on to write fourteen full-length Oz books. Baum styled himself as "the Royal Historian of Oz" in order to emphasize the concept that Oz is an actual place on Earth, full of magic. In his Oz books, Baum created the illusion that characters such as Dorothy and Princess Ozma relayed their adventures in Oz to Baum themselves, by means of a wireless telegraph.

After Baum's death in 1919, publisher Reilly & Lee continued to produce annual Oz books, passing on the role of Royal Historian. Ruth Plumly Thompson took up the task in 1921, and wrote nineteen Oz books. After Thompson, Reilly & Lee published seven more books in the series: three by John R. Neill, two by Jack Snow, one by Rachel Cosgrove Payes, and a final book by Eloise Jarvis McGraw and Lauren Lynn McGraw. The forty books in Reilly & Lee's Oz series are called "the Famous Forty" by fans, and are considered the canonical Oz texts.

Ruth Plumly Thompson (27 July 1891 – 6 April 1976) was an American writer of children's stories, best known for writing many novels placed in Oz, the fictional land of L. Frank Baum's classic children's novel The Wonderful Wizard of Oz and its sequels.