A History of Christianity in the Apostolic Age

Martin Luther: The Man and His Work

Martin Luther and His Work

The Rise of Modern Religious Ideas

The Validity of Non-episcopal Ordination: Dudlein Lecture Given at Harvard University, April 9, 1901

The Apostles' Creed: Its Origin, Its Purpose, and Its Historical Interpretation

Protestant Thought Before Kant

The Christian Point of View: Three Addresses