Columbia subject headings:
Businessmen--United States--Biography.
Chemical industry--United States--History--19th century.
Du Pont, Lammot, 1831-1884.
E.I. du Pont de Nemours & Company--History.
Explosives industry--United States--History--19th century.
Harvard subject headings:
Businessmen--United States--Biography
Chemical industry--United States--History--19th century.
Du Pont, Lammot, 1831-1884.
E.I. du Pont de Nemours & Company--History.
Explosives industry--United States--History--19th century.
Princeton subject headings:
Businessmen--United States--Biography.
Chemical industry--United States--History--19th century.
Du Pont, Lammot, 1831-1884.
E.I. du Pont de Nemours & Company--History.
Explosives industry--United States--History--19th century.