Ten friends and colleagues of Warren J. Haas, former president of the Association of Research Libraries, contributed the nine papers in this Festschrift honoring Haas on the occasion of his 65th birthday and the tenth year of his leadership as president of the Council on Library Resources. The papers, which describe Haas's role in significant library developments of the last 25 years, are: (1) "Warren J. Haas: The University Years" (Patricia Battin); (2) "President, Council on Library Resources" (Deanna B. Marcum); (3) "The National Bibliographic Program" (C. Lee Jones); (4) "RLG (Research Libraries Group) Revisited" (Rutherford D. Rogers); (5) "In Pursuit of Preservation" (Peter G. Winterble); (6) "Professional Library Education" (Robert M. Hayes); (7) "The Foundation Connection" (James M. Morris); (8) "The Art of International Librarianship: The CLR-IFLA (Council on Library Resources-International Federation of Library Associations and Institutions) Style" (Herman Liebaers and Margreet Wijnstroom); and (9) "Warren J. Haas and the Influence of His Publications" (Martin M. Cummings). An introduction, a biographical sketch of Haas, and a subject/title index are included. (SD)