Included:

• Bibliographies:
  • The Czech National Bibliography
  • Dutch National Library
  • The English Short Title Catalogue
  • The Estonian National Bibliography
  • The Bibliography of the Hand Press Books in Flanders *
  • The Finnish National Library Database Melinda
  • The Finnish National Bibliography Fennica
  • The French National Bibliography (BNF)
  • The German National Bibliography
  • The Heritage of the Printed Book Database
  • The Incunabula Short Title Catalogue
  • The Short-Title Catalogue Netherlands
  • The Swedish National Library Database
  • The Polish National Bibliography
  • The Portuguese National Bibliography
  • The VD17
  • The VD18
• Actor authority files:
  • The German Integrated Authority File (Gemeinsame Normdatei)
  • The Virtual International Authority File
  • ISNI
  • Library of Congress Identities Linked Data
  • Getty Union List of Artist Names
• Geographical reference datasets:
  • GeoNames
  • Getty Thesaurus of Geographic Names
• Other datasets:
  • French National Library Linked Data
  • Wikidata