They also can cause hernias if not packed the right way.
Yes, we can move a large box full of books if you need us to, but it will probably take longer to pick up and maneuver than a stack of smaller book boxes. Smaller boxes of books can be easily scooped up onto a dolly by one man and whisked out to the truck, 4 or 5 at a time. It's highly likely that one large box full of books will take a couple of men. That wardrobe box on that one move just didn't get out the door before it fell apart.
If you have any questions about what size boxes are good for books, just ask us and we'll help you out.
photo from http://www.flickr.com/photos/timetrax/376152628/