Question:
Which employer did Arnold Mallis work for in Sep, 1944?

Context:
 Arnold Mallis works for Gulf Oil from Jan, 1945 to Jan, 1968. 
 Arnold Mallis works for University of Delaware from Jan, 1944 to Jan, 1945. 
 Arnold Mallis works for Pennsylvania State University from Jan, 1968 to Jan, 1975.

Answer:
University of Delaware