Water and books don't usually go together. If you're one of the many sorting through waterlogged possessions right now—or if you're just the type to drop a book in the bath—the preservation experts at Syracuse University Libraries have a video for you, as spotted by The Kid Should See This. Their handy (if labor-intensive) technique to rescue a damp book features paper towels, a fan, some boards, and a bit of time. Plus, they offer a quick trick if you don't have the chance to repair the book right away.
The Kid Should See This also notes that literary magazine Empty Mirror has further tips on salvaging books and papers damaged by water, including how to clean them if the water was dirty (rinse the book in a bucket of cold water, or lay flat and spray with water) and what to do if there's a musty smell at the end of the drying process (place the propped-open book in a box with some baking soda, but make sure the soda doesn't touch the book).
Of course, prevention is the best policy—so store your tomes high up on bookcases, and be careful when reading in the bath or in the rain. (That, or you could buy a waterproof book.)
[h/t: The Kid Should See This]