The Columbia University Library will be updating the backend of the catalog over the winter break starting Friday, December 28th at 8 pm. CLIO will be available online to look up items, however, there will be no ability to renew or place holds/recalls until January 7th. Borrow Direct will also be unavailable. Interlibrary loan will be unaffected and staff will be able to manually check out items for you.
Thank you for your patience.