Descendant (1876–1963) of famed gunpowder-manufacturing millionaire E. I. DuPont. Irénée, who entered the family business in 1902, later oversaw such company acquisitions as the Standard Arms Company. Thirteen TLS and one partial TLS signed by DuPont, 1907–1909, on various business-related matters, including “placing Standard Rifles in China,” “the new shot gun,” contracts and legalities, travel plans, and more. Accompanied by several related letters to DuPont and one with his secretarial signature. In fine condition overall, with scattered toning and staining to a few letters, pinholes and mild handling wear, and light mailing folds touching signatures. R&R COA.