In this interview excerpt, Pierre Pescatore, a Luxembourg diplomat from 1947 to 1967 and a member of the Drafting Group at the Intergovernmental Conference on the Common Market and Euratom from October 1956 to March 1957, describes his memories of these negotiations, which led to the signing of the Treaties establishing the European Economic Community (EEC) and the European Atomic Energy Community (EAEC or Euratom). He particularly mentions the roles played by Yves Devadder, Head of the Legal Office in the Belgian Foreign Ministry, and his Dutch counterpart, Willem Riphagen.