The Library's primary clientele are the staff members of the tenant agencies of the Interchurch Center. Students and faculty of Columbia University, Union Theological Seminary, New York Theological Seminary and Jewish Theological Seminary have borrowing privileges. The Library also loans books, through formal interlibrary loan procedures, to patrons of other libraries. The Library invites researchers in the history of missions and ecumenism to use its specialized resources on site. Please call 212-870-3804 for an appointment.