On 24 July 1957, Pierre Uri, Director of the General Economy Division of the High Authority of the European Coal and Steel Community (ECSC), draws up a note addressed to Jean Monnet, President of the Action Committee for the United States of Europe (ACUSE), in which he sets out a series of arguments in favour of the institutions of the ECSC, the European Economic Community (EEC) and the European Atomic Energy Community (Euratom) sharing a single seat.

In July 1957, the economist, Fernand Baudhuin, Professor at the Catholic University of Louvain, assesses the state of Benelux cooperation, comparing it to the implications of the future European Economic Community (EEC).

In September 1957, in an article for the military magazine Mars et Mercure, the economist, Maurice Masoin, Professor at the Catholic University of Louvain and President of the International Institute of Public Finance (IIPF), outlines the implications for Belgian industrialists of the imminent establishment of the European Economic Community (EEC).

From 29 November to 1 December 1957, just before the entry into force of the Rome Treaties, the members of the Second Round Table examine the future of Europe and its institutions, and make a series of recommendations to the governments concerned and to the European institutions.

On 12 December 1957, commenting on the forthcoming entry into force of the Treaty establishing the European Economic Community (EEC), the German weekly newspaper Die Zeit publishes an address delivered by Wilhelm Röpke, Professor at the Graduate Institute of International Studies (IUHEI) in Geneva, who warns against sacrificing the principles of market economy and monetary stability.

On 18 December 1957, the German weekly magazine Der Spiegel comments on the negotiations on the recruitment of officials to be responsible for harmonising the Community administration following the entry into force of the Treaties establishing the European Economic Community (EEC) and the European Atomic Energy Community (EAEC or Euratom).

On 24 December 1957, referring to the ongoing negotiations on the future seat of the institutions of the European Economic Community (EEC) and the European Atomic Energy Community (EAEC or Euratom), the French cartoonist Lap illustrates his idea for a European capital.

On 26 December 1957, commenting on the forthcoming entry into force of the Treaties establishing the European Economic Community (EEC) and the European Atomic Energy Community (EAEC), the German weekly newspaper Die Zeit emphasises the need to establish an economic and political union between the nations of Europe.

On 30 December 1957, Walter Hallstein, Junior Minister in the German Foreign Ministry, forwards a note to Konrad Adenauer informing him of the progress of the negotiations with regard to the allocation of posts in the new Community institutions.

‘Waiting outside the door: Conference on a united Europe … Conference on the capital of Europe … Conference on Europe’s key personnel.’ On 11 January 1958, the German cartoonist, Wolfgang Hicks, takes an ironic look at the delays caused by the European negotiators in implementing the Rome Treaties on the European Economic Community (EEC) and the European Atomic Energy Community (EAEC or Euratom).

‘The European family … Bon appétit!’ On 11 January 1958, referring to the entry into force of the Treaties establishing the European Economic Community (EEC) and the European Atomic Energy Community (EAEC or Euratom), the Dutch cartoonist, Opland, illustrates the advantages that the Member States of the Communities hope to enjoy: Belgium is eating coal and steel, France is eating Euratom, Germany is benefiting from the Common Market and Italy is devouring the investments of the European Investment Bank (EIB), while the Netherlands is represented as a bookmark inserted into a volume of European law and the thin cat, Sicco Mansholt, Netherlands Member and Vice-President of the Commission of the EEC, must make do with the leftovers.

On 15 January 1958, the Spanish-born cartoonist César takes an ironic look at the ongoing diplomatic negotiations to determine the future seat of the institutions of the European Economic Community (EEC) and the European Atomic Energy Community (EAEC or Euratom).

On 22 January 1958, the German weekly magazine Der Spiegel describes the phenomenon of the increasing number of American businesses setting up in the six countries of the European Economic Community (EEC) in response to the application of new customs tariffs by the Six.

On 25 January 1958, in an address to the members of the future European Parliamentary Assembly meeting in Brussels for the opening of the constituant session of the Councils of the European Economic Community and the European Atomic Energy Community (EAEC or Euratom), Enrico Medi, Vice-President of the Euratom Commission, emphasises the implications of nuclear research, with particular regard to energy production.

In an article in the twice monthly journal Socialisme, published by the Belgian Socialist Party, in September 1958, the Trotskyist theorist Ernest Mandel provides a critical analysis of economic liberalism as seen in the Treaty establishing the European Economic Community (EEC).

In September 1958, in the fortnightly journal Socialisme published by the Belgian Socialist Party, Victor Larock, Belgian Foreign Minister, outlines the way in which the City of Brussels was, at least temporarily, chosen by the Six to accommodate the institutions of the European Communities.