The Hiebler family papers include documents pertaining to four generations. The bulk of the collection consists of letters written by Alfred I. du Pont to his grandsons Bayard Hiebler and Benno Hiebler, dated 1927 to 1935.

Sophie du Pont Ford (1871-1957) was the daughter of Victor du Pont (1828-1888) and Alice Hounsfield du Pont (1833-1904) and the wife of Bruce Ford (1873-1931). Her papers consist primarily of her diaries but also include a scrapbook with news clippings relating to the DuPont Company, an address book with family birth dates, and a book with watercolor and text entitled "Life of Branch H. Giles."