The Treaty concerning German-French co-operation was signed, together with a Joint Declaration, on 22 January 1963 at the Élysée Palace, the official residence of the President of the French Republic. The Joint Declaration is about a fundamental reorganisation of the mutual relationship.
Page 2 of the Joint Declaration, German version. The Joint Declaration was signed by the German chancelor Konrad Adenauer and the French president, Charles de Gaulle.