A brand new and fully updated edition of this seminal work on archival preservation. Access to archival material - the documentary heritage of people all over the world that gives them their identity and ensures their rights - is dependent on the survival of fragile materials: paper, parchment, photographic materials, audiovisual materials and, most recently, magnetic and optical formats. The primary importance of such survival is widely acknowledged but sometimes overlooked in a rush to provide ever better means of access. But without the basic material, no services can be offered....