A Guide to the Care of Papers and Photographs. To collectors of photographs, documents, and books, preservation and conservation--" pres-con" to librarians--present problems pitting the physical needs of perishable materials against the constraints of time and money. Even stopgap measures carry costs, but inept, inadequate, or delayed attention may result in increased deterioration. Here is help for those willing and able to undertake pres-con by themselves. Functioning much as a stylebook does for writers, Tuttle's tidy guide prepares users for undertaking remedial measures. It presents information on paper, inks, environment, storage, and repair simply and clearly; considers the special needs of differing materials; and, in generous appendixes and a glossary, helps put users in touch with the specialized world of preservation and conservation. Know-how may not be an absolute substitute for time and money, but a little knowledge can help in taking proactive steps to protect and preserve two-dimensional materials. A valuable resource.