Copeland, Charles, 1867-1944 (associated name), Copeland, Louisa d'A. du Pont (Louisa d'Andelot du Pont), 1868-1926 (associated name), Copeland, Lammot du Pont, 1905-1983 (associated name), E.I. du Pont de Nemours & Company (associated name), Hagley Museum and Library (associated name)