Sky Island: Being the Further Adventures of Trot and Cap'n Bill after Their Visit to the Sea Fairies is the sequel to Baum's The Sea Fairies. Both books were intended to be parts of a long-running fantasy series to replace the Oz books. In Sky Island Trot is near her home when she meets a strange boy with a large umbrella. Button Bright has been using his family's magic umbrella to take long-range journeys from his home. The two, joined by Cap'n Bill, decide to take a trip to a nearby island but the umbrella takes them to a different place entirely. Lyman Frank Baum was an American author of children's books, best known for writing The Wonderful Wizard of Oz. He wrote thirteen novel sequels, nine other fantasy novels, and other works. | Sky Island by L Frank Baum, Paperback | Indigo Chapters