Until March 1989 the Central Technical Services (CTS) of the General Library System at the University of Wisconsin-Madison followed a traditional scheme of organization. The Acquisitions Department consisted of two sections, Monographs and Serials, each of which was responsible for preorder searching, ordering, receiving, and paying. Upon receipt, materials went to the MARC Department where they were searched on OCLC for cataloging copy and cataloged if usable copy was found. Items lacking copy were then sent either to an uncataloged control area, or to the original catalogers who were members of one of four broad subject cluster groups (explained below). The third department was Catalog Editing, which was responsible for maintaining integrity of the information in the online public catalog, e.g., processing items considered lost and those that had been withdrawn. Catalog Editing also included the Marking Room, responsible for adding call numbers and tattletape to each item. Three major factors led us to consider reorganization of CTS. The first was the existence of the five subject clusters. In a reorganization of library functions in the mid-19808, these groups had been formed for the humanities, area studies, social sciences, physical sciences and biological sciences. The groups, which reported to two Associate Directors, consisted of selectors (main library subject bibliographers and branch librarians) and original catalogers who had formerly been the members of the Cataloging Department. Each cluster had a coordinator elected from its members on a rotating annual basis; the coordinators were responsible for cluster meetings and liaison with CTS on technical services matters. The clusters were formed to enable selectors and original catalogers to work more closely to reach a better understanding of each other’s needs and work and to establish cataloging priorities. The second factor was that with the implementation of NOTIS in early 1987, we realized that we had an opportunity to review workflow and organization of CTS. We were no lon-