- The Modern Movement in American Theology: Sketches in the History of American Protestant Thought from the Civil War to the World War
- The Seminary Method of Original Study in the Historical Sciences, Illustrated from Church History
- Christian Life Theology (Classic Reprint)
- The Doctrine of the Transcendent Use of the Principle of Causality in Kant, Herbart and Lotze
- The Fundamental Ideas of the Roman Catholic Church Explained and Discussed for Protestants and Catholics