In a personal letter dated 4 August 1970, Baron Hubert Ansiaux, Belgian Chairman of the Committee of Governors of the Central Banks of the EEC Member States, sends Pierre Werner, on a confidential basis, the report drawn up by central bank experts for the Committee of Governors on the advisability of harmonising monetary policy instruments and effectively tightening monetary policies in the Member States. This report would become an integral part of the Werner Report.