The Enchanted Island of Yew: Whereon Prince Marvel Encountered the High Ki of Twi and Other Surprising People is a 1903 children's book, a fantasy written by L. Frank Baum and illustrated by Fanny Y. Cory. It is not an Oz book, though materials in it show a clear relationship and resemblance with Baum's most famous fantasy country. Baum dedicated the book to his youngest son, Kenneth Gage Baum.