This latest edition of An Ounce of Preservation, has been extensively revised to better reflect the causes of paper and photograph deterioration, and the environmental conditions that can prevent these various types of damage. The materials used to repair and store items have been updated as have their respective procedures. The chapters on Document and Photograph Arrangement to facilitate their use in the organization and storage of these items. The book's appendices have been extensively revised to clarify existing products and include new ones, update the contact information of product and service suppliers, and the state archives for every U.S. state and several territories.
