NEDCC Handbook for Digital Projects. A classic published by the School for Scanning folks at the Northeast Document Conservation Center in Boston. Contains information on project management, selecting materials, copyright, best practices, and digital longevity.
Measuring Quality Of Digital Masters. Curious about the factors that go into creating high-quality digital images? Read this explanation by Franziska Frey at RIT (Rochester Institute of Technology). It appears in RLG's Guides to Quality in Visual Resource Imaging.