Catholic Encyclopedia: Roger Bacon - 1912 article by Theophilus Witzel, providing an extensive overview of Bacon's life and works. www.newadvent.org/cathen/13111b.htm
MacTutor History of Mathematics: Roger Bacon - Concise biographical article, with links to articles on related thinkers. www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Bacon.html
Roger Bacon's Place in the History of Alchemy - Footnoted journal article by Edmund Brehm, discussing Bacon's contributions to alchemy. Features a diagram showing how alchemy fit into Bacon's world system. www.levity.com/alchemy/rbacon.html
Roger Bacon: Despair over Thirteenth Century Learning - An excerpt from Bacon's 1271 work, Compendium Studii Philosophiae. Modernized version of the Brewer translation, provided by the Internet Medieval Sourcebook Project. www.fordham.edu/Halsall/source/bacon1.html
Roger Bacon: On Experimental Science - An excerpt from Bacon's 1268 work, Opus Tertium. Provided by the Internet Medieval Sourcebook Project. www.fordham.edu/Halsall/source/bacon2.html
The Mirror of Alchemy - A brief tract attributed to Bacon, here in an English edition first published in 1597. www.levity.com/alchemy/mirror.html
