From the End of the War to the Schuman Plan (the late 1940s to the early 1950s)

The Europa website provides a historical overview of the period 1945-1959: http://europa.eu/abc/history/1945-1959/index_en.htm

The Europa website also contains information and multimedia resources related to the founding fathers of the EU: 

http://europa.eu/about-eu/eu-history/founding-fathers/index_en.htm

The Virtual Resource Centre for Knowledge about Europe (CVCE) is a resource centre for the study of the EU. It contains links to multimedia resources relating to the history of European integration, including media clips of key historical events: http://www.cvce.eu/home

The Marshall Foundation provides background materials and the text of George Marshall's Harvard speech of 5 June 1947, in which he set out the design of the Marshall Plan for the reconstruction of Europe. The site also provides links to interviews, films, videos and timelines.
http://marshallfoundation.org/marshall/

The Organisation for Economic Cooperation and Development (OECD) is the successor to the OEEC. Its website contains some information on the history of the OEEC. http://www.oecd.org/document/48/0,3343,en_2649_201185_1876912_1_1_1_1,00.html

La Fondation Robert Schuman contains information on Robert Schuman and the Schuman Declaration of May 1950 which set out a blueprint for the European Coal and Steel Communities (ECSC).
http://www.robert-schuman.eu/fr/robert-schuman

The website of the Jean Monnet Foundation contains a range of different written and oral resources, including excerpts from Jean Monnet's memoirs describing the construction of Europe.

http://www.jean-monnet.ch/

The British Pathé website contains archive news reel footage covering key episodes in the history of the EU, including the founding of the ECSC and the EEC. https://www.britishpathe.com/workspaces/page/the-european-union