H. Scholz: "Die Reformation und der deutsche Geist." Preussische
Jahrbücher, clxx, 1, 1918.
F. Heiler: Luther's Religionsgeschichtliche Bedeutung. 1918.
F. T. Teggart: The Processes of History, 1918, pp. 162 ff.
Lucy H. Humphrey: "French Estimates of Luther," Lutheran Quarterly,
April, 1918. (Interesting study).
J. Paquier: Luther et l'Allemagne. 1918.
Wilbur Cross Abbott: The Expansion of Europe 1415-1789. 2 vols. 1918.
H. E. Barnes: "History," Encyclopaedia Americana, 1919.
George Foot Moore: History of Religions: Judaism, Christianity,
Mohammedanism. 1919.
P. Hume Brown: Surveys of Scottish History. 1919. (Essays posthumously collected).
J. Haller: Die Ursachen der Reformation. 1919.