Ask a Librarian Chat Service Hours

Monday - Friday from 9 am - 8 pm 

Saturday and Sunday from 12 pm - 6 pm

During the summer and academic intersessions, the Ask a Librarian Chat Service is staffed:  

Monday - Friday from 9:00 am - 5:00 pm

There may be periods when the service is unavailable. If that is the case, please contact us by one of the other means on the following page.

Use of Ask a Librarian services is limited to Columbia University faculty, students, staff, and alumni; and to those with questions specific to the Columbia University Libraries, the use of its collections, and its policies. If you’re not affiliated with Columbia University, please direct your query to your local public, state, or academic library.