This report is based in part on an analysis of current preservation practices and of the 1988-89 Association of Research Libraries (ARL) Preservation Statistics. It includes discussion of the 10 components of a comprehensive preservation program to which library administrators must give attention. Organizational models for mature preservation programs based on four size groupings of ARL libraries are also included in the report. They address libraries with collections of under 2 million volumes, 2 to 3 million volumes, 3 to 5 million volumes, and over 5 million volumes. In addition, for each size grouping, four levels of program maturity are described with benchmarks for personnel, production, and budgets. The report also includes four case histories illuminating various organizational settings for preservation program development. (MAB)