If books or paperwork have become water damaged, they can often be recovered by air drying, often with the help of a dehumidifier or fan to increase dry air flow. Avoid using heat on wet paper, as this can cause it to shrink, deform the book, or even pose a fire hazard. It is important to remember that the item itself will not return to its original state, with staining likely, and will need to be handled with care after drying as the paper may be brittle, or weakened.