Books about Christianity -- Controversial literature (sorted by popularity)
- Frauds and Follies of the Fathers J. M. Wheeler 52 downloads
- The Christian Religion: An Enquiry Robert Green Ingersoll 51 downloads
- Christianity in relation to Freethought, Scepticism, and Faith Charles Bradlaugh and William Connor Magee 45 downloads
- Thoughts on the Christian Religion, by a Deist Anonymous 44 downloads
- The Kernel and the Husk: Letters on Spiritual Christianity Edwin Abbott Abbott 43 downloads
- Christian Mystery: A Chinese Tale, Found in the Portfolio of a Portuguese Friar Anonymous 42 downloads
- Letters to Eugenia; Or, A Preservative Against Religious Prejudices baron d' Paul Henri Thiry Holbach 41 downloads
- The Doubts of Infidels William Nicholson 38 downloads
- Antikristus: Arvostelukoe kristinopista (Finnish) Friedrich Wilhelm Nietzsche 32 downloads
- Ingersoll in Canada: A Reply to Wendling, Archbishop Lynch, Bystander; and Others Allen Pringle 25 downloads