Anschluss of Austria. April 7, 1938, registered mixed franking cover bearing German Culture Fund souvenir sheet of four and two Austrian values, each one tied by special violet swastika postmark ''Der Fuhrer Spricht. 7. April.1938'', sent in Linz just three days before a referendum on the Anschluss with Germany, arrival marking is alongside, VF and an interesting postal history item (Image)