The Wizard of Oz (1902 musical)
The Wizard of Oz was a 1902 musical extravaganza based on "The Wonderful Wizard of Oz" by L. Frank Baum, which was originally published in 1900. Much of the original music was by Paul Tietjens and has been mostly forgotten, although it was still well-remembered and in discussion at MGM in 1939 when the classic film version of the story was made. Although Baum is the credited bookwriter, Glen MacDonough was hired on as jokewriter after Baum had finished the script.
Dorothy and the Wizard in Oz
Baum, having resigned himself to writing a series of Oz books, set up elements of this book in the prior "Ozma of Oz" (1907). He was not entirely pleased with this, as the introduction to "Dorothy and the Wizard of Oz" opens with the protest that he knows many tales of many lands, and hoped that children would permit him to tell them those tales.