European Union | European Parliament | World Health Organization | Member of the European Parliament | European Commission | International Organization for Standardization | World Trade Organization | World Intellectual Property Organization | International Labour Organization | Food and Agriculture Organization | European Space Agency | Charitable organization | World Economic Forum | International Civil Aviation Organization | World Meteorological Organization | United Nations Industrial Development Organization | International Maritime Organization | European | Interpol (organization) | European Court of Human Rights | European Court of Justice | Organization for Security and Co-operation in Europe | Organization of American States | non-governmental organization | European Economic Community | West Midlands (European Parliament constituency) | National Organization for Women | European People's Party | Indo-European languages | United Nations Economic Commission for Europe |
After his return to Germany Matthöfer began work in the department of economics for the workers union IG Metall, followed by 4 years at the Organization for European Economic Cooperation in Washington, D.C. and Paris.
In 1949, Mr. Slater was named Secretary General of the Allied High Commission in Germany and three years later moved to Paris where he served as executive secretary in the office of the United States representatives to NATO and the Organization for European Economic Cooperation, set up under the Marshall Plan.