I don’t think I’m the only person to be intrigued, even fascinated, by make-believe fictional books that appear in real fictional books. The kind of books that you could almost credit existed once, indeed heartily wish did exist in fact, whether or not you have any intention of reading them.
While reading Susan Cooper’s The Dark is Rising I recently did a little list of these works that I’d really like to imagine as existing and available, if not in our own then at least in some parallel universe. Various websites have selections of such fictional books — for example, Wikipedia’s is here — but I’ve deliberately not consulted these, relying instead on memories of novels I’ve read (all links are to my reviews or posts) or intend to read soon.
The sources for the fictional books are listed afterwards: the books themselves are in no particular order other than as they occurred to me.