The library's new Knowledge Center is now open.  The service desk will be staffed as follows.

Service Desk Hours
 Monday - Thursday  9 am to 7 pm
 Friday  9 am to 5 pm
 Saturday  CLOSED
 Sunday  Noon to 8 pm

15 minutes before closing time all circulation transactions should be completed.

The Knowledge Center space will remain open for 24-hour access to CUMC students, faculty, and staff only.  At the end of staffed hours, library staff will check IDs.  Knowledge Center guests without a CUMC ID will be asked to leave.  CUMC affiliates will have after-hours access via card swipe.

The Columbia University Libraries website has a calendar view of the schedule above and hours for other libraries such as Barnard and the Digital Humanities Center.

Holiday Closings

The service desk will be closed on the following holidays for the 2016/2017 academic year.  The Knowledge Center space will remain accessible via card access.

Labor Day September 4-5, 2016
Thanksgiving November 24-25, 2016
Christmas December 25-27, 2016
New Year's Day January 1-3, 2017
Martin Luther Jr.'s Birthday January 15-16, 2017
President's Day February 19-20, 2017
Memorial Day May 28-29, 2017
Independence Day July 4, 2017

Interlibrary Loan (ILL)

Monday - Friday, 9am to 5pm.

Archives & Special Collections

Monday - Friday, 9:15am to 4:45pm, by appointment only. Telephone and email reference is available Monday - Friday, 9am to 5pm. Please contact the Archives & Special Collections at hslarchives@columbia.edu for more information