The Emerald City of Oz contains more material on the social organization of Oz than most of the earlier books, and as a consequence has attracted commentary on its Utopian aspects [REF].
Gregory Maguire, author of the revisionist Oz novels Wicked and Son of a Witch, has written that The Emerald City of Oz "is suffused with an elegiac quality" and compares its tone with that of The Last Battle, the final volume of C. S. Lewis' Chronicles of Narnia [REF].