The Tyranny of God

On the Improvement of the Understanding

Lectures of Col. R. G. Ingersoll, Volume I Including His Answers to the Clergy, His Oration at His Brother's Grave, Etc., Etc.

Flowers of Freethought (First Series)

Heretics And Heresies From 'The Gods and Other Lectures'

Humboldt From 'The Gods and Other Lectures'

The Works of Robert G. Ingersoll, Vol. 06 (of 12) Dresden Edition—Discussions

Satires and Profanities

Christianity Unveiled Being an Examination of the Principles and Effects of the Christian Religion

The Truth About Jesus : Is He a Myth? Illustrated

The Bible: I. Authenticity II. Credibility III. Morality

De Tribus Impostoribus, A. D. 1230: The Three Impostors Translated (with notes and comments) from a French manuscript of the work written in the year 1716, with a dissertation on the original treatise and a bibliography of the various editions