Wow, congratulations, that's really great. I've been working on a Library of Babel simulation myself, if you want to check it out : http://agar.itch.io/the-unity-of-babel.
We should implement on a newer version, like an infinitely generated world with buildings fulll of books, not just on shelves, ability to actually pick them up, drop, read and put them back, ability to throw books around if the player pleases lol.
it would be good if the person could add a book in the archives and upload it toa server or something, one way to make it somewhat multiplayer?