The Pilgrim's Progress Resources
WEBSITES
Yep: it's old. And that means your one-stop shop is good ol' Project Gutenberg. We love those guys.
Bunyan's verse gets the Poetry Foundation treatment, and you get an excellent bio of the man himself.
Encyclopedia Britannica doesn't mess around—get all your Bunyan factoids.
Luminarium is an amazing resource for anyone studying literature from the Medieval period through the Restoration. The page devoted to Bunyan is a stand-out.
A site devoted to the works and life of John Bunyan. You can even find some of his sermons here.
AUDIO
At this link, Project Gutenberg offers a free download of the book being read aloud.
IMAGES
Here you can see images of the engaved illustrations from the 1693 version, each matched with one of the pilgrims' songs.
This site has the image of an actual 1678 map of Christian's allegorical journey—and it's gorgeous.
Here are illustrations from the text that you can print out and color. No, really.