If the later books are written by other authors, why is L. Frank Baums name on the cover?
Beginning with Kabumpo in Oz, the phrase “Founded on and Continuing the Famous Oz Stories by L. Frank Baum” was included as part of every book published by Reilly and Lee. This was part of the contract between Reilly and Lee and Maud Baum to allow the series to continue. Not only did the phrase have to be on new Oz books, L. Frank Baum’s name had to be in the same size and typeface as the book’s author. This does not mean in any way that the stories are based on anything Baum wrote. The stories are all the complete and original creations of the men and women who wrote them.