Hallenberg’s History of Gustavus Adolphus; Fryxell’s History of Sweden, translated by Mary Howitt; Dreysen’s Life of Gustavus Adolphus; S. R. Gardiner’s Thirty Years’ War; Schiller’s Thirty Years’ War; Schiller’s Wallenstein, translated by Coleridge; Dr. Foster’s Life of Wallenstein; Colonel Mitchell’s Life of Gustavus Adolphus; Lord F. Egerton’s Life and Letters of Wallenstein; Chapman’s History of Gustavus Adolphns; Biographie Universelle; Article in Encyclopædia Britannica on Sweden; R. C. Trench’s Social Aspects of the Thirty Years’ War; Heydenreich’s Life of Gustavus Adolphus.
