- Roger Bacon's Place in the History of Alchemy - http://www.levity.com/alchemy/rbacon.html
Footnoted journal article by Edmund Brehm, discussing Bacon's contributions to alchemy. Features a diagram showing how alchemy fit into Bacon's world system.
- Catholic Encyclopedia: Roger Bacon - http://www.newadvent.org/cathen/13111b.htm
1912 article by Theophilus Witzel, providing an extensive overview of Bacon's life and works.
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