The Royal Book of Oz (1921) is the fifteenth in the series of Oz books, and the first, by Ruth Plumly Thompson, to be written after L.
Even if genuine, they bear no resemblance to Thompson\'s book.
Baum\'s surviving notes, known as "An Oz Book" 2] are known from four typewritten pages found at his publisher\'s, but their authenticity as Baum\'s work has been disputed.
The original introduction claimed that the Book was based on notes by Baum, but this has been disproved.
Beginning in the 1980s, some editions have correctly credited Thompson, 1] although the cover of the 2001 edition by Dover Publications credits only Baum.
Although Baum was credited as the author, it was written entirely by Thompson.
Frank Baum\'s death.
The Royal Book of Oz (1921) is the fifteenth in the series of Oz books, and the first, by Ruth Plumly Thompson, to be written after L