Pergamon Museum
From 1958 until 1964, Erdmann was Head of the Museum of Islamic Art, Berlin, a department of the State Museums of Berlin, today the Pergamon Museum. He also worked as a professor at the universities of Berlin, Hamburg, Bonn, Cairo, and Istanbul (1951-1957). Erdmann was a member of the German Archaeological Institute. As Head of the Berlin Pergamon Museum, he was responsible for the reconstruction of the Berlin museum collections after World War II. The erection of the Berlin Wall further disrupted the collections of the museums of the divided city. Erdmann worked on the planning for the new Museum of Islamic Art, then in Dahlem, West Berlin, until his death.