Researchers making a first visit to the library at the Massachusetts Historical Society must fill out a registration form and present a current form of photographic identification. A member of the reading room staff will explain library policies and introduce the reader to the library catalogs. The library stacks are closed to readers; except for reference works, library users must fill out call slips for all items. Research materials do not circulate and can be used only in the reading room under the supervision of library staff. Reference staff members will be available throughout the day to answer questions and assist readers with library research.