Archives
- Abraham Pollen Archives and Rare Book Library (Mass. Eye and Ear)
- Andover-Harvard Theological Library
- Archaeological Exploration of Sardis
- Archive of World Music (at Loeb Music Library)
- Arnold Arboretum Archives
- Art Museum Archives
- Arthur and Elizabeth Schlesinger Library on the History of Women in America
- Baker Library Historical Collections
- Biblioteca Berenson
- Botanical Museum-Archives
- Busch-Reisinger Museum Archives, Harvard Art Museum
- Cabot Science Library
- Carpenter Center: Photography Archives
- Center for Population Studies Library
- Child Memorial Library
- Collection of Historical Scientific Instruments
- Countway Library of Medicine
- Derek Bok Center for Teaching and Learning
- Dumbarton Oaks - Institutional Archives
- Dumbarton Oaks Research Library - Garden Archives
- Dumbarton Oaks Research Library - Image Collections & Fieldwork Archives
- Eda Kuhn Loeb Music Library
- English Department Library
- Environmental Science and Public Policy Archives
- Episcopal Divinity School
- Episcopal Divinity School Library: Hodges Collection
- Farlow Reference Library and Herbarium of Cryptogamic Botany
- Fine Arts Library
- Fogg Art Museum Archives
- Frances Loeb Library - Special Collections Department
- Francis A. Countway Library of Medicine, Center for the History of Medicine
- George Edward Woodberry Poetry Room
- Gray Herbarium
- Gutman Library Special Collections
- HCPPM - Harvard University Planning Office
- HUA
- Harry Elkins Widener Collection
- Harvard Archives
- Harvard Art Museums [Archives; Arthur M. Sackler Museum; Busch-Reisinger Museum; Fogg Art Museum]
- Harvard Film Archive
- Harvard Forest Library
- Harvard Map Collection
- Harvard Theatre Collection
- Harvard University Archives
- Harvard University Art Museums
- Harvard-Yenching Library
- Henry A. Murray Archive: A Center for the Study of Lives
- Houghton Library
- Isham Memorial Library (at Loeb Music Library)
- John G. Wolbach Library and Information Resource Center, Harvard - Smithsonian Center for Astrophysics, Astronomical Institutes Collection
- Law School Library-Historical & Special Collections
- Loeb Design Library
- Loeb Music Library
- Monroe C. Gutman Library
- Morse Music & Media
- Murray Archive
- Murray Research Center
- Museum of Comparative Zoology--Archives
- Peabody Museum-Archives
- Peabody Museum-Photographic Archives
- Poetry Room
- Population Studies Library
- Property Information Resource Center
- Roosevelt, Theodore, Collection, Harvard College Library
- Ruth and David Freiman Archives at Beth Israel Deaconess Medical Center
- Sardis Expedition
- Schlesinger Library
- Semitic Museum Archives
- Theodore Roosevelt Collection, Harvard College Library
- Tozzer Library
- Ukrainian Research Institute Reference Library
- University Archives
- Warren Anatomical Museum
- Widener Library
- Wolbach Library, Harvard - Smithsonian Center for Astrophysics
- Woodberry Poetry Room