| 1. A Treatise on Toleration |
| Voltaire's 1763 work, translated by Richard Hooker. |
| http://www.wsu.edu:8080/~wldciv/world_civ_rea... |
| 2. Encyclopedia |
| Encyclopaedia, or Reasoned Dictionary of the Sciences, Arts, and Trades, edited by Denis Diderot and Jean le Rond d'Alembert, to which Voltaire contributed. |
| http://quod.lib.umich.edu/cgi/b/bib/bibperm?q... |
| 3. Letters On The English Or Lettres Philosophiques |
| E-text at Modern History Sourcebook with a brief introduction. |
| http://www.fordham.edu/halsall/mod/1778voltai... |
| 4. Letters on England |
| Complete chapter-indexed hypertext of Voltaire's text. |
| http://literatureproject.com/book/voltaire/le... |
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