- The International Spy
- Old Testament Legends
- A Philosophical Dictionary, Volume 2
- Public School Education
- God's Plan with Men
- The Essentials of Spirituality
- Bible Romances
- A Letter Addressed to the Abbe Raynal, on the Affairs of North America, in Which the Mistakes in the...
- The Great Controversy Between Christ and Satan
- The Excellence of the Rosary
- The Trial and Death of Jesus Christ
- His Life
- Myth, Ritual and Religion — Volume 1
- Every Girl's Book
- Palestine or the Holy Land
- Jesus Himself'
- True Words for Brave Men
- The Good News of God
- Zionism and Anti-Semitism
- How to Live a Holy Life
- Writings of Thomas Paine — Volume 4 (1794-1796): the Age of Reason
- Introduction to the History of Religions
- A Philosophical Dictionary, Volume 3
- No and Yes
- Ten Great Religions
- The Pocket Bible or Christian the Printer
- The Book of Religions
- Good Sense
- Who Wrote the Bible? : a Book for the People
- Spiritual Life and the Word of God
- Brazilian Sketches
- Quit Your Worrying!
- Superstition In All Ages (1732)
- Answers to Prayer
- Answers to Prayer
- The Creative Process in the Individual
- Concerning Christian Liberty
- The Way of Peace
- Companion to the Bible
- The Vital Message
- Christ, Christianity and the Bible
- What Peace Means
- Legends of the Gods
- Christianity and Greek Philosophy
- She and Allan
- Human Nature and Other Sermons
- Religion and Theology: A Sermon for the Times
- The Idea of God in Early Religions
- Thoughts on Missions
- The Happiness of Heaven
- The Mind of Jesus
- The Oxford Movement
- Men of the Bible
- The Kingdom of God Is Within You
- Mohammedanism
- The Buddhist Catechism
- Quiet Talks on Service
- Key to the Science of Theology
- The Religions of India
- A Philosophical Dictionary, Volume 9
- Atheism Among the People
- History of the Catholic Church from the Renaissance to the French Revolution — Volume 2
- Lord of the World
- 六祖坛经
- Out of the Deep
- Humanity in the City
- Morning and Evening Prayers for All Days of the Week
- Wreaths of Friendship
- India's Problem, Krishna or Christ
- Expositions of Holy Scripture
- Child's Story of the Bible
- The Greatest Thing In the World and Other Addresses
- The Hindu-Yogi Science Of Breath
- The Future of Islam
- Self-Raised
- The Women of the Arabs
- The Making of a Nation
- God and the World
- Cenci
- A History of Art in Chaldæa & Assyria, v. 1
- Modern English Books of Power
- Letters from Egypt
- Science and the Infinite
- The Soul of a People
- Communism and Christianism
- Through the Magic Door
- Female Suffrage: a Letter to the Christian Women of America
- A Philosophical Dictionary, Volume 8
- The Life of David
- Thoughts on Religion
- The Christian Life
- History of Religion
- Forbidden books of the original New Testament
- The Words of Jesus
- Mark Twain's Letters — Volume 4 (1886-1900)
- A Critical Exposition of the Popular 'Jihád'
- A Philosophical Dictionary, Volume 6
- The Canon of the Bible
- Under the Prophet in Utah; the National Menace of a Political Priestcraft
- Selections from the Table Talk of Martin Luther