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  • Provides a forum for the exchange of ideas by persons working with or interested in map and geography collections
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  • Contributes to the improvement of education and training of map and geography librarians.

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WorldCat Validation Installation, 15 July 2026

  • 1.  WorldCat Validation Installation, 15 July 2026

    Posted 4 hours ago

    On 15 July 2026, OCLC installed changes to WorldCat Validation. See the WorldCat Validation Release Notes, July 2026 at oc.lc/validation-release-notes for full details.

    This validation installation includes the following new features and enhancements:

    • OCLC-MARC Validations of New MARC Codes Announced 4 April-3 June 2026
      • Classification Scheme Source Codes
      • MARC Code List for Relators
      • Name and Title Authority Source Codes
      • National Bibliography Number Source Codes
      • Standard Identifier Source Codes
      • Subject Heading and Term Source Codes
    • MARC 21 Bibliographic Update No. 42 (Announced May 2026)
    • MARC 21 Authority Update No. 42 (Announced May 2026)
    • Subfield $a no longer required in bibliographic field 044

    These enhancements and fixes are the result of announcements of new MARC elements and codes by the Library of Congress as well as feedback and requests from members of the OCLC community.

    Kate 



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    Kate James (she/her/hers)
    OCLC · Program Coordinator- Metadata Engagement, Global Product Management
    6565 Kilgour Place, Dublin, Ohio, 43017 United States
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