"[5][6] He served as trustee, chairman, and librarian to the executive committee of the New York Genealogical and Biographical Society.
[3] He was also a volunteer for the American Red Cross during World War I, where he served as inspector with the rank of captain in France between 1918 and 1919.
[7] Hatfield hired architect Carl Schmitt to design his castle of a home, Stepping Stones, in New Canaan, Connecticut in 1926.
[8] The Gothic-style mansion had 40 rooms, and the four-acre property also was home to a private chapel used by the Roman Catholic order of the Fathers of the Holy Ghost.
[9] The mansion was known for its beauty, and featured elements like a forty-by-twenty-foot dining room with 20-foot ceilings, a greenhouse, floor-to-ceiling paintings, and a three-story Italian marble & wrought iron spiral staircase.