Baum dedicated the book to the otherwise-unknown "Judith of Randolph, Massachusetts" -- most likely one of the child readers who corresponded with the author. In The Sea Fairies, the famous author of the Oz books takes us on an adventure to a fairyland -- one to be found deep below the rolling waves of the ocean Note: this isn't generally considered an Oz book, and you'd be hard pressed to find a mention of Oz in these pages. But in later books Baum wrote characters from this and other books into his Oz titles -- which makes these Oz series books, after a fashion.