sentences:  The Oz he discovers is on the brink of civil war; he encounters Erakna, the new Wicked Witch.Farmer takes an unusual approach to the corpus of Oz literature; he depends almost solely on Baum's original Oz book and neglects its many sequels.This "originalist" approach to the Oz mythos is rare but not unique; a few other writers have taken similar tacks, including Roger S. Baum, the great-grandson of L. Frank Baum.