The Official Journal was published for the first time on 30 December 1952 as a single series (A). In April 1958 the A series was replaced by the P series. The P series existed from 1958 until 1967. Since January 1968 the OJ has been published in two separate series, L (Legislation) and C (Information and Notices).
A repository and archive for research materials on the topic of European integration and unification. The AEI collects both independently-produced research materials and official European Community/European Union documents.