Notice: Out of an abundance of caution, all Library of Congress research centers will be closed to the public (including researchers and others with reader identification cards) until further notice, to reduce the risk of transmitting COVID-19 coronavirus. All Library-sponsored public programs are also postponed or cancelled through July 1. Online resources and reference services, such as Ask a Librarian, will continue to be available during this time. For more information, see: www.loc.gov/coronavirus.

Public Services Hours of Service Reader Registration Reading Room Services Advance Reserves Special Search Request Form Collections Served Requesting Materials from Offsite Interlibrary Loan	Thomas Jefferson's Library, the seed from which today's Library grew. (photo by Reid Baker)	General Information Description and History CALM Division Organization Public Service - Behind the Scenes Ft. Meade (Offsite Storage) Update Contact Information Missing Status Information/ILS Library Security Space Reorganization Program Ask a Librarian Want to ask the reference staff a question about the managing the collections?
The center of any great research library is its book collection. At the Library of Congress, the General Collections, comprised of approximately 23 million volumes, is the bedrock on which the institution is based. The Collections Access, Loan and Management Division (CALM) is responsible for maintaining and serving the General Collections, while ensuring, through appropriate security and preservation measures, that the collection will be available for future generations.