This comparative study of the Cleveland Regional Union Catalog located at Case Western Reserve University and the Ohio State Library Catalog located in Columbus had as its purpose evaluation of the effectiveness of the catalogs and determination of their potential roles in Ohio library service. Data gathered on questionnaires and from analysis of the catalogs are used to compare the catalogs' administration, operation, services, holdings, and contributing libraries. Because the cost of the two catalogs is judged to be excessive in relation to the amount of service provided, the following recommendations are included: (1) establishment of unified administration of the two catalogs, (2) establishment of a single means of financial support for the two catalogs, (3) physical merger of the two catalogs into an Ohio Union Catalog, and (4) use of the proposed Ohio Union Catalog as the nucleus for a statewide bibliographic center complete with automatic data processing equipment and methods. (CC)