Joseph Lewis, Robert Green Ingersoll (1957). “Ingersoll the Magnificent: To which Has Been Added a Special Arrangement of Some Gems from Ingersoll for Inspiration, Wisdom, and Courage”
Robert Green Ingersoll (1920). “Ingersoll: Fifty Great Selections, Lectures, Tributes, After Dinner Speeches and Essays, Carefully Selected from the Twelve Volume Dresden Edition of Colonel Ingersoll's Complete Works”