- A Few Words About the Devil, and Other Biographical Sketches and Essays
- Ancient and Modern Celebrated Freethinkers: Reprinted From an English Work, Entitled "Half-Hours With The Freethinkers."
- Heresy: Its Utility And Morality. A Plea And A Justification
- Humanity's Gain from Unbelief: Reprinted from the "North American Review" of March, 1889
- Some Objections To Socialism: From "The Atheistic Platform", Twelve Lectures
- The Impeachment of the House of Brunswick
- The True Story of My Parliamentary Struggle
- Theological Essays
- When Were Our Gospels Written?