At Western Kentucky University, the Library uses a Macintosh to filter and edit information on current serials to produce a periodicals guide for faculty and students. This tool has proven useful in collections development, reference and serials control within the Library. It has also provided the Library with a means to communicate to the academic community the extent of serials holdings in specific disciplines. Additionally, the Library has used the information within the guide to generate other lists of serials holdings for its patrons.