CLIO is the online catalog for the more than 20 Columbia University Libraries, and it includes records for materials available in Columbia’s departmental libraries as well as for electronic resources accessible to all current Columbia and Teachers College students, faculty, and researchers. CLIO does not include the holdings of the Teachers College, Columbia Law School, or Jewish Theological Seminary libraries, which are represented in EDUCAT, Pegasus, and the JTS online catalog, formerly called Aleph.
CLIO includes records for books, serials, journals, newspapers, online resources, government documents, microforms, sound recordings, video recordings, and archival collections; it does not include citations to articles in magazines, journals, and newspapers. CLIO includes records for the journals and newspapers to which the Libraries subscribe, but not the articles published in them.
For Columbia’s full description of all of CLIO’s features, see CLIO Help at
To access a set of video tutorials, the first six of which focus on CLIO searching, see Columbia’s Library Essentials at