The John Milton Reading Room: Paradise Lost
https://www.dartmouth.edu/~milton/reading_room/pl/book_1/text.shtml
The full text of the poem Paradise Lost, a significant influence on The Golden Compass.
Philip Pullman: Writings
http://www.philip-pullman.com/writings
Further writings (and illustrations) by the author of The Golden Compass.
The Making and Faking of Lyra's Oxford
https://muse.jhu.edu/article/177317
An essay by Philip Pullman about how he designed the alternate Oxford of His Dark Materials.
