E.I. du Pont de Nemours & Company is a chemical company more commonly known as the DuPont Company. It was established in 1802 and began by manufacturing gunpowder, later moving into chemical compounds. During the 1920s and 1930s, under the leadership of Irénée du Pont (1876-1963), president from 1919 to 1926, and Lammot du Pont (1880-1952), president from 1926 to 1940, the company became the world's leading chemical manufacturer producing smokeless powder, dynamite, dyes, cellophane, textile fibers, and artificial rubber. The records primarily document the presidency of Lammot du Pont, with some fragmentary records from the Irénée du Pont period.