Gnosis & Philosophy

"The Philosophy Pages" Dictionary of Philosophical Studies
http://www.philosophypages.com/dy/

"The Maiden Grammar As Teacher"
based on Martanius Capella's
"Marriage of Philology and Mercury"
(450 C.E.)
http://en.wikipedia.org/wiki/Allegory_in_the_Middle_Ages

Boethius (c.480-524) : "The Consolation of Philosophy"
http://www.fordham.edu/halsall/source/con-phil.asp

Illuminated Manuscripts : The Bodelian Library, Oxford University
http://www.bodley.ox.ac.uk/dept/scwmss/wmss/medieval/browse.htm

Dante's (Divine) Comedy : The Holkham Illustrated Manuscript,
The Bodelian Library, Oxford University (Genoa, Italy, 14th century last quarter)
Inferno (55 images)
Purgatorio (56 images)
Paradiso (36 images)

Philosophy: A Tentative Typology of Philosophical Categories
by Chris Doveton
http://www.helium.com/items/125173-a-tentative-typology-of-philosophical-categories