The print and multimedia collections of the MIT Libraries include more than 5 million items, with over 3 million volumes of print material, 17,000 journal and other serial subscriptions, 478 online databases, over 55,000 electronic journal titles licensed for access, and over 2.8 million items in collections of microforms, maps, images, musical scores, sound recordings, and videotapes.

The divisional libraries are open seven days a week and offer hours that extend well into the evening.

Hayden, Barker, and Dewey Libraries feature 24/7 study rooms to accommodate MIT students around the clock.

[2] The Department of Distinctive Collections (previously the Institute Archives and Special Collections) contains materials documenting MIT’s history, and the Library Storage Annex, located off-campus, houses materials that can be requested and available for use the next business day.

The Libraries also manage DSpace, a digital repository created to capture, preserve, and share MIT's intellectual output with the world.