"Richard von Hegener"@en . . . "1905Z"^^ . "1905-09-02Z"^^ . "Richard von Hegener (2 September 1905 - 18 September 1981) was a primary organizer of the Nazi German \"euthanasia\" program within Hitler's Chancellery. After the war, he gave evidence against other participants in the program."@en . . "1981Z"^^ . . . . "1981-09-18Z"^^ .