Library Hours


Institute participants receive full access to the Harvard University Libraries. The university’s libraries contain more than 15 million books, journals, manuscripts, government documents, maps, microforms, music scores, sound recordings, visual materials, and data files. The library holdings are searched via the system-wide catalog known as HOLLIS ( The HOLLIS database is updated continually as material is ordered, received and catalogued. The main online portal to the Harvard Libraries is

Widener Library

Widener Library is the main library for Harvard College and contains extensive research collections in social sciences and humanities in some three million volumes. Collections primarily emphasize literature and and include significant holdings in linguistics, classical and modern languages, folklore, bibliography, economics, philosophy, psychology, the history of science and technology, and the history of social sciences. Includes international works in more than 100 languages with special emphasis on Hebrew and Yiddish, Slavic, and Middle Eastern languages. Harvard Yard
Mon. – Thurs.: 8 a.m. – 10 p.m.
Fri. – Sat.: 9 a.m. – 5 p.m.
Sun.: 12 p.m. – 5 p.m.

Lamont Library

The first university library building in the United States specifically planned for undergraduates. It is a general undergraduate library supporting humanities and social sciences, music and multimedia, and contemporary poetry. Lamont also houses the student-run Lamont Library Café, a great spot to grab coffee and pastries while working.

Harvard Yard
Mon. – Thurs.: 8 a.m. – 10 p.m.
Fri.: 8 a.m. – 5 p.m.
Sat.: 10 a.m. – 5 p.m.
Sun.: 12 p.m. – 10 p.m.

Houghton Library

Houghton is Harvard’s library of rare books and manuscripts. Its holdings comprise primarily materials related to American and European history, in addition to the personal collections of a variety of renowned authors. It also houses the Harvard Theatre Collection, one of the world’s largest performing arts collections. Be sure to stop by the library’s fascinating current exhibit, “Boston’s Crusade Against Slavery,” which explores the role of the city in the international abolitionist movement.

Harvard Yard
Mon., Fri., Sat.: 9 a.m. – 5 p.m.
Tues. – Thurs.:

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