Conversation so far:
Where was Walter O'Malley born?
Walter O'Malley was born in the Bronx, New York
Who was Walter O'Malley father?
Walter O'Malley's father was Edwin Joseph O'Malley
What did Walter O'Malley father do?
Walter O'Malley's father was a cotton goods salesman
Who was Walter O'Malley mother?
Walter O'Malley's mother was Alma Feltner
What did Walter O'Malley mother do?
How did Walter O'Malley get interested in baseball?
Walter O'Malley grew up as a Bronx-born New York Giants fan. He frequently attended Giants games at the Polo Grounds with his uncle Clarence.
Where did Walter O'Malley attend school?
Walter O'Malley attended Jamaica High School in Queens and then the Culver Academy.
Was Culver Academy in Queens also?
No, Culver Academy was located in Indiana.
When did Walter O'Malley move to Indiana?
Walter O'Malley moved to Indiana on 1920.
Did Walter O'Malley attend college?
Walter O'Malley attended the University of Pennsylvania (Penn).

Question: What did he study there?
Self-contained rewrite: What did Walter O'Malley study at Penn?