Please note: during evening and weekend hours, access the HKS Library through the Littauer courtyard entrance. Patrons without a Harvard ID will need to sign in at the security desk with photo ID. The building is restricted to Harvard ID holders after 11pm.
Extended Hours are available for the Library Commons area during the regular Fall and Spring terms, 7:00am - 2 hours after the main area of the library closes. From May 7 - May 15, the Library Commons will be open until 2am.