A listing is presented of 17 documents in the ERIC database concerning the Online Catalog (sometimes referred to as OPAC or Online Public Access Catalog), a computer-based and supported library catalog designed for patron use. The database usually represents recent acquisitions and often contains information about books on order and items in circulation. The ERIC documents consist of papers, journal articles, and newsletters published (with one exception) since 1980. They are listed alphabetically by author under the following categories: planning for the online catalog, description of specific OPACs, user studies, and online subject access. (KC)