Postwar President of Austria. He was an Austrian politician who served as the President of Austria between 1965 and 1974. He was a typesetter by profession and a member of the Social Democratic Party of Austria. After World War II, he got involved in Viennese communal politics and was mayor of Vienna from 1951 to 1965. From 1965, he was federal president and was re-elected in 1971. Jonas was a fervent supporter of Esperanto, and starting in 1923, became a long-time instructor of the language. His address to the 1970 World Congress of Esperanto, which was held in Vienna, was delivered in Esperanto. In 1974, he died in office, the fourth consecutive president to do so.
Bio by: Ola K Ase
Margarete Towarek Jonas