Here's a Guardian review of Oscar's Books by Thomas Wright, a book about the books that Oscar Wilde owned and read. I also had a link to another review, but have now lost it.

I think it's an interesting idea for a book, but perhaps not one that I am interested in following through to its conclusion; after all, reading what Oscar Wilde (might have) read will not make me Oscar Wilde. Would it help me understand his works better? Maybe, but I still would not be thinking like Wilde. I've tried to read A Rebours in the past (in translation) and have failed; I just cannot see whatever it is that Oscar Wilde (and Dorian Gray) saw in the book. Perhaps they had access to a better translation?

But this kind of literary tourism is not without merit, I guess, for we all do strange things in order to get closer to our idols. Who is it in Possession that performs a similar exercise with Randolph Ash's books? I think it is Mortimer Cropper, the moneyed American professor, who seeks to own Ash through the objects that Ash himself owned. Me, however, I just read Oscar Wilde's works, and that's almost enough for me.