The Library has expanded the LCCN Permalink Service to name and subject authority records. These persistent URLs are based on the Library of Congress Control Number (LCCN). LCCN Permalinks are displayed on authority record entries in LC Authorities.


Create an LCCN Permalink

Simply begin your URL with the LCCN Permalink domain name -- -- then add an LCCN.

       Examples   or

LCCNs should be formatted according to the info:lccn URI specification. Instructions are also available in the LCCN Permalink FAQ.


How LCCN Permalink Works

An LCCN Permalink retrieves a MARCXML-formatted record using the Z39.50/SRU protocol. Both valid and cancelled LCCNs (MARC 21 fields 010a and 010z) are searched. Authority record displays for LCCN Permalink follow the labeled display found in LC Authorities. MARCXML and MADS versions of the records are also available. Displays link to entries in LC Authorities and the LC Online Catalog -- and, where appropriate, to entries in the Virtual International Authority File and LC Authorities and Vocabularies.


More Information

Additional information on this service is available on the LCCN Permalink FAQ.


Ann Della Porta

Chief, Integrated Library System Program Office

Library of Congress

Washington, DC 20540-4010

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