The CHS Library collection focuses upon and supports research in all areas of Ancient Hellenic Civilization.  Subject coverage includes literature (archaic, classical, Hellenistic and early imperial), history, philosophy, religion, art, archaeology, architecture, epigraphy, papyrology, medicine, mathematics, science and numismatics. Collections in Latin Literature and Roman Studies are less complete, but very useful for comparative purposes and interdisciplinary projects.

In its early years the Library was fortunate to acquire the private library of Werner Jaeger and large portions of the libraries of Arthur Darby Nock and Arthur Stanley Pease. These three scholars had all taught at Harvard University. James H. Oliver of the Johns Hopkins University also bequeathed materials to the Center. Because of these gifts, the collection contains many older editions of texts and rare copies of dissertations. Recently, books from the library of Sterling Dow of Harvard University have enriched the archaeology section. The classical papers of I.F. Stone have also been donated to the Center and are available to scholars upon advance request.

The Center’s Library contains over 75,000 printed volumes; approximately one-third of these are periodicals.  Currently about 1,000 books, excluding serials acquired through subscription, are added each year. The purchasing program allows for the acquisition of the most important classics titles published by American university presses in the United States, as well as titles published in other countries, including England, France, Germany, and Italy. Friends of the Library, many of them previous Fellows, are generous in their gifts.

The Library has access to an ever-increasing number of electronic materials. Online resources include L’Année Philologique, The Loeb Classical Library, Der Neue Pauly/The New Pauly, Arachne, Beazley Research Archive, New Jacoby, Oxford Scholarship Online : Classical Studies, Perseus, Thesaurus Linguae Graecae and many electronic journals and series.

The Center’s collection can be searched through the Harvard Library catalogue; new titles are listed as soon as they are catalogued. Like most academic research libraries in the United States, the Center follows the classification system of the Library of Congress.