Light speeds up the aging processes of paper, weakening the paper fibres and causing brittleness, discolouration and fading of library items. Don't put items where the sun can shine on them. Turn lights off. Food and drink should never come close to library materials, they can stain paper and increase the risk of pest infestation. Even vases, potted plants and cups of coffee have a nasty habit of overflowing or spilling.
Water can seriously damage paper.
Never leave any library items on the floor because they will be damaged by even the smallest water leak. Handling and Use Most damage occurs to library and archive materials when they are being handled. Wash your hands frequently. Hands should always be kept clean and dry while touching paper. Both skin oil and perspiration stain paper.