You can do this in the latest version of OBSE, I believe. I'm not exactly sure what the function is, but I've seen mods that do it. For example:
http://www.tesnexus.com/downloads/file.php?id=15294 manages to do it quite well.
It's easier to do in the Construction Set though. Just go to
Items>Books, select/create/duplicate a book and double click it. All of the text in it can be found under the 'Book Text' window.
Hope that helped!
EDIT: You'll need OBSE V16 to do this; and so will the recipient.