Gerhart Moritz Riegner was the secretary-general of the World Jewish Congress from 1965 to 1983. On August 8, 1942, he sent the famous Riegner Telegram through diplomatic channels to Stephen Samuel Wise, president of the World Jewish Congress. (However, Wise did not receive it until the end of the month. The source of the information was Eduard Schulte, the anti-Nazi chief executive officer of the prominent German company Giesche that employed high-level Nazi officials.