This is one of seven in a series of Preservation Planning Program resource guides. It focuses on options for handling materials that are too deteriorated to benefit from other preservation treatments. These "hopeless cases"-items that would require an unreasonable amount of conservation work to fix-can be resolved through a process of "reselecting" items either by replacing or reformatting them. The reselection process integrates preservation with collection development, acquisitions, cataloging, circulation, and public services, both in planning for a replacement and reformatting program and also in daily work.