After the passing of L. Frank Baum, Ruth Plumly Thompson carried the torch of Oz with imagination, wit, and a flair for new adventures. Across these thirteen volumes, spanning The Cowardly Lion of Oz through The Wishing Horse of Oz, Thompson expanded the geography of Oz, enriched its lore, and introduced a host of new heroes and villains. Her stories sparkle with humor, heart, and fast-paced quests that honor Baum’s vision while boldly making the series her own. This set celebrates Thompson’s enduring contribution to the ever magical Land of Oz.