Which son of Mary Williamson Averell served as Secretary of Commerce under President Harry S. Truman?
Mary Williamson Averell:  Averell had several children; her son, W. Averell Harriman became governor of New York and her daughter Mary Harriman Rumsey founded the Junior League. W. Averell Harriman:  The son of railroad baron E. H. Harriman, he served as Secretary of Commerce under President Harry S. Truman and later as the 48th Governor of New York.
W. Averell Harriman