 With the war over, in 1946 she and her husband flew a single-engine plane from New York City to Buenos Aires, Argentina.The Chichester du Pont Foundation was incorporated in 1946 by Alice du Pont Mills, A. Felix du Pont, Jr., Lydia Chichester du Pont, and Mary Chichester du Pont Clark.The foundation, which remains in operation, is primarily involved in supporting youth with donations made to social service organizations for the direct benefit of children.