Columbia's library search service, provides information about books, journal titles, and other materials in Columbia University's library collections and the ReCAP Shared Collections, including selective listings from the Law Library, but excepting those of the Teachers College Library. Law and TC each have their own catalog, called Pegasus and Educat respectively.
CLIO : library web : Columbia University Libraries online catalog.
This is a rapid delivery service that allows patrons from participating libraries to check the availability of and request library material from the combined catalogs of Brown, Cornell, Dartmouth, Duke, Harvard, Johns Hopkins, MIT, University of Pennsylvania, Princeton, Stanford, University of Chicago, and Yale. This service can also be used to search for and request materials held by the Center for Research Libraries (CRL). Note that, except for CRL materials, this service focuses primarily on books. For materials from other libraries outside Columbia, as well as journal articles, please use Interlibrary Loan (ILL).
The largest online public access catalog in the world, with bibliographic records from more than 10,000 institutions worldwide. Many of the materials listed in this catalog are available through Interlibrary Loan (ILL).