In an effort to apply modern management techniques to the Columbia University Libraries, the Association of Research Libraries sponsored a study which called for restructuring the libraries to underscore functional relationships. The report of that study was reviewed by the libraries' administration and staff, and reorganization plans were made based on the study. First, the organization of the libraries was restructured, with designated key administrators and staff and new reporting relationships. Second, new staffing descriptions were established, in greater detail than previously. Third, new program planning resulted in a restructured budget, the program accounting technique of cost analysis, plans for a coordinated policy manual, and the creation of permanent planning structure. The report describes general goals and objectives, and for each unit of the organization lists principal administration, parent unit, role, objectives, functions, key working relationships, reports, and performance and evaluative criteria. Organization charts are provided for the six major groups and for the overall administrative structure. (LS)