Rinkitink in Oz: Wherein is Recorded the Perilous Quest of Prince Inga of Pingaree and King Rinkitink in the Magical Isles that Lie Beyond the Borderland of Oz. is the tenth book in the Land of Oz series written by L. Frank Baum.
Prince Inga is the son of King Kitticut and Queen Garee, who rule the island kingdom of Pingaree. Kitticut tells Inga that years earlier, when armies from the neighboring islands of Regos and Coregos attempted to invade and conquer Pingaree, they were repelled by Kitticut himself with the aid of three magic pearls. The blue pearl gives its bearer superhuman strength, the pink pearl protects him from any harm, and the white pearl speaks words of wisdom. Read more and enjoy.