American Waldensian Society: A history of the Waldensians in Middle Ages, during the Reformation and as a present component of Italian Society.Chiesa Evangelica Valdese: Short history of the Waldensians.Historic Waldensian Sites: The Committee on Historic Sites in the Waldensian Valleys, maintained by the Italian Waldensian community. With an historical introduction to the Waldensians and a virtual tour.The History of the Christian Church: Book by William Jones includes a detailed and interesting account of the Waldenses and Albigenses in Chapters 5 and 6.The Waldensian Movement: An article from a Protestant perspective arguing that the Waldensians were crucial in setting the scene for the Protestant reformation.Wikipedia: Waldensians: Short history of this movement.