Its library collections now total over 500,000 volumes in both paper and microform. The total number of serial titles is around 6,000, of which some 3,300 are current files. As well as having one of the finest European Documentation Centres in the EU with documents in four languages and privileged access to EU databases, the EUI Library is a deposit library for the Council of Europe.
Law reports, parliamentary debates and official journals exist for the major member states.
Archives of European newspapers for the post-war period are held on microfilm. A fully-catalogued working paper collection provides access to the latest research in economics and political economy. The EUI is also the repository of the Historical Archives of the European Communities. The collections of the EUI Library and its information policies have been developed over the course of twenty years' experience in serving the European social science research community . Rich archive resources and unique access to a whole range of EU documentation offer the possibility of research into all aspects of EU history, development, policy formation and implementation, as well as wider comparative European political and socio-economic issues.