Throughout this Digital Project, I made use of darknessvisible.com, an institution developed by Christ's College of Cambridge for Milton scholarship and the study and reception of Paradise Lost.
Hopkins, David. (2013). Reading Paradise Lost. Hoboken, NJ: Wiley-Blackwell.
Digital Tour of Christ's College, Cambridge, where Milton spent from 1625-1632, is available here: http://darknessvisible.christs.cam.ac.uk/christs_map/christsmap.html
All Paradise Lost illustrations were accessed by means of a Creative Commons license. The gallery of William Blake Paradise Lost illustrations is available for public access on wikipedia.com:
https://en.wikipedia.org/wiki/William_Blake%27s_illustrations_of_Paradise_Lost