In 1989, the Online Computer Library Center (OCLC) introduced a microcomputer-based evaluation tool called the Collection Analysis CD. In 1993, the SUNY Stony Brook Libraries used this tool to measure its collections against those of 27 Association of Research Libraries (ARL) peer libraries and of a "mythical" peer group. In 1996, the libraries of the State University of New York (SUNY) at Stony Brook used this CD-ROM to compare its collections to those of the SUNY University Center libraries at Albany, Binghamton, and Buffalo. Because these four libraries have formed a consortium for resource sharing and cooperative collection development, collection evaluation is seen as the first step toward drafting resource sharing agreements and assigning collection responsibilities. Five tables provide lists of subdivisions of ARL member institutions, a list of large academic libraries, and a list of priority academic programs at SUNY Stony Brook. Monograph purchases of each of the four consortium libraries are illustrated with 42 bar graphs. The consortium's total acquisitions are compared against totals from ARL members and large academic libraries; then the purchases of each individual library in various priority programs and other subject areas are compared to purchases in the same areas made by the other three members of the consortium. Data collectors found that while Stony Brook's capacity for acquisition did not compare favorably to the average ARL member, it was only slightly above or below Albany, Binghamton, and Buffalo in most disciplines. (Author/BEW)