Career
From 1908 until 1938 he worked at the Austrian Archaeological Institute at Athens. After the Anschluss he worked at the German Archaeological Institute at Athens. He became a professor in 1945 at the University of Vienna.
He was a professor in Salzburg in 1948 and again at Vienna from 1951 to 1953 with Josef Keil, director of the Österreichischen Archäologischen Institutes, literature the Austrian Archaeological institutes.