The Greenfield Library provides the St. John's community with a growing collection of more than 100,000 volumes. Books from the St. John's Program in many editions and translations form the basis of the collection, with additional volumes serving as secondary sources and representative works in the major fields of learning.
Holdings are most extensive in philosophy, literature, classics, and the history of science.
Comfortable study spaces are available throughout the building. The Music Library in Mellon Hall contains scores and recorded music. The Library is named in honor of Stewart H. Greenfield, Class of 1953, and Constance Greenfield. The public is welcome to visit during regular hours of operation.