Skip to main content
  • Subscribe by RSS
  • Ex Libris Knowledge Center

    Is there a delay between the weekly publishing by LOC and availability of updated records in Alma?

    • Product: Alma


    Is there a delay between the LoC's weekly publishing of LCSH and LCNAF and the availability of those updated authority records in Alma (for the 'Authorities - Preferred Term Correction' job)?


    Yes, there is a slight delay.

    New and updated Library of Congress Authorities are available from LoC every week, and are usually uploaded on Tuesdays to their FTP server. Once available, the files are usually loaded into the CZ on Thursday.

    Additional Information

    For more information on the schedule of authority updates in the Community Zone, please see the 'Vocabularies' chart in: Working with Authority Records

    Library of Congress Authorities are available at:

    From the Library of Congress Authorities FAQ:
    Are authority records up to date?
    Yes. Library of Congress Authorities are updated every night, Monday through Saturday. The nightly update includes records newly created and updated the previous day by LC catalogers and contributed by NACO participants. Any records deleted during the previous week are removed on a weekly basis early every Monday morning.

    LoC information on the Subject Authorities (database) is available at: 

    LoC information on the Name Authorities (database) is available at: 


    • Article last edited: 11-Sep-2018