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Welcome to Archive of European Integration

The Archive of European Integration (AEI) is a free to everyone electronic repository and archive for research materials on the topic of European integration and unification. Its focus is the post-War development, activities, and foreign relations of the European Coal and Steel Community (ECSC), the European Atomic Energy Community (Euratom), the European Economic Community (EEC), the European Community (EC), and the European Union (EU).The AEI collects certain types of independently-produced research materials and official European Community/European Union documents.

The Archive of European Integration contains papers from approximately 40 private research organizations, listed at Contributing Institutions. These documents can be found at Browse by Journals and Series and Browse by Conferences. The scanning and deposit of documents received as part of the EU Delegation collection in Washington DC was completed at the end of 2019. Beginning in 2020, virtually all new content added to the AEI will consist of papers from the private research organizations referenced above. Nevertheless, we are always on the lookout for new, relevant papers from scholars worldwide to add to the AEI.

At present, the AEI contains 78355 documents.

Photograph of the European Union Flag waving in the air


Photograph of a stack of books with the words Annual Report written on the binding

EU Annual Reports

Photograph of a man standing and speaking to a crowd of people sitting

EUSA Conference Papers

Photograph of a bookshelf with various books

EU Series and Periodicals

Photograph of a nuclear powerplant in Germany

EUR Series on Nuclear Research

Photograph of various papers bound together by paperclips

EU Online Resource Guides

Archive of European Integration supports OAI 2.0 with a base URL of