Question:
Which employer did Kurt O. Friedrichs work for in Aug, 1957?

Context:
 Kurt O. Friedrichs works for Technical University of Braunschweig from Jan, 1931 to Jan, 1937. 
 Kurt O. Friedrichs works for RWTH Aachen University from Jan, 1929 to Jan, 1931. 
 Kurt O. Friedrichs works for New York University from Jan, 1937 to Jan, 1976.

Answer:
New York University