Nachdem er aus England zurückkehrte, arbeitete er im akademischen Jahr 1936-1937 als Assistent an der University of Wisconsin-Madison, da in Kanada kein adäquater Posten verfügbar war. ###>Later, he returned from England to take a job as a teaching assistant at the University of Wisconsin–Madison that he held for the 1936–37 academic year, being unable to find a suitable job in Canada.