Denmark
- Det Kongelige Bibliotek - National library of Denmark
- Dansk BibliotheksCenter - The Danish Bibliographic Centre provides Danish libraries with bibliographic data, databases and web products
- Det Grønlandske Landsbibliotek - National library of Greenland
Finland
- Helsingin yliopisto / Kansalliskirjasto - Helsinki University Library / National library of Finland
Norway
- Nasjonalbiblioteket- National library of Norway
- BIBSYS - Library data center offering services to all Norwegian University Libraries, the National Library, all college libraries, and a number of research libraries
Sweden
- Kungl. Biblioteket - National library of Sweden
- LIBRIS - The union catalogue of Swedish libraries