https://www.google.fr/#q=the+european+commission+1958-72+history+and+memories
La pensée européenne et atlantique de Paul-Henri Spaak (1942–1972).
“The signing of the Treaties also attracted the attention of that other transnational institution, the Catholic Church. Pope Pius XII had listened closely to Spaak’s speech at the Banco di Roma on 26 March on the subject of tomorrow’s Europe, which had been broadcast on Italian radio. On 13 June the Pope addressed a gathering of a thousand delegates to the European Movement’s Congress in Rome and gave a particularly interesting speech emphasising the idea of a spiritual and moral ‘Community’ and its responsibilities, particularly in Africa. He called for the ratification of the Treaties by the national parliaments and expressed a desire for a strengthening of the executives of the new Communities and hence the creation of a unifying political entity.” (p.39)
"On 5 and 6 January 1958 the representatives of the governments of the six Member States met in Paris and designated the members of the first Commission of the European Economic Community, to be presided by Walter Hallstein, a close associate of Chancellor Konrad Adenauer." (p.51)
La pensée européenne et atlantique de Paul-Henri Spaak (1942–1972).
“The signing of the Treaties also attracted the attention of that other transnational institution, the Catholic Church. Pope Pius XII had listened closely to Spaak’s speech at the Banco di Roma on 26 March on the subject of tomorrow’s Europe, which had been broadcast on Italian radio. On 13 June the Pope addressed a gathering of a thousand delegates to the European Movement’s Congress in Rome and gave a particularly interesting speech emphasising the idea of a spiritual and moral ‘Community’ and its responsibilities, particularly in Africa. He called for the ratification of the Treaties by the national parliaments and expressed a desire for a strengthening of the executives of the new Communities and hence the creation of a unifying political entity.” (p.39)
"On 5 and 6 January 1958 the representatives of the governments of the six Member States met in Paris and designated the members of the first Commission of the European Economic Community, to be presided by Walter Hallstein, a close associate of Chancellor Konrad Adenauer." (p.51)