Pierre Samuel "P.S." du Pont (1870-1954) was the great-grandson of Eleuthère Irénée du Pont (1771-1834), founder of E.I. du Pont de Nemours & Company, and that company played a major role in P.S. du Pont's life. He is most well-known for developing the preeminent botanical gardens, Longwood Gardens in Kennett Square, Pennsylvania. The P. S. du Pont estate papers document the distribution of physical items from his Longwood estate in Kennett Square, Pennsylvania, in the years following his death.

Pierre Samuel "P.S." du Pont (1870-1954) was an industrialist, entrepreneur, and philanthropist. He was president of E.I. du Pont de Nemours & Co. from 1915 to 1919 and chairman of the board of directors from 1919 to 1940. This small collection consists of four Christmas greetings letters from Pierre S. du Pont to Joseph H. Odell (1871-1929), pastor of the First Presbyterian Church of Troy, New York. Odell was the officiant at Pierre S. du Pont and Alice Belin's (1872-1944) wedding on October 16, 1915.

Pierre Samuel "P.S." du Pont (1870-1954) was an industrialist, entrepreneur, and philanthropist. He was president of E.I. du Pont de Nemours & Company from 1915 to 1919 and chairman of the board of directors from 1919 to 1940. P.S. du Pont was the great-grandson of Eleuthère Irénée du Pont (1771-1834), founder of E.I. du Pont de Nemours & Company, and the great-great-grandson and namesake of the French economist Pierre Samuel du Pont de Nemours (1739-1817). During the early 1920s, P.S. du Pont became an active collector of Du Pont materials, and bought several important bodies of manuscripts from French dealers. This collection consists of manuscripts he collected that are primarily concerned with Du Pont de Nemours, the Physiocrats, the French Revolution, and the antecedents of the Du Ponts and allied families in France. The collection also contains the Wilmington & Kennett Turnpike Co. records dating from 1811 to 1921 that were acquired by P.S. du Pont from 1919 to 1920 when he purchased the company's stock, widened the road, and turned over its administration to the Delaware State Highway Department.

P.S. du Pont (1870-1954) and Louise du Pont Crowninshield (1877-1958) were second counsins and both had an interest in preservation. In the letter, du Pont suggests Eleutherian Mills and Hagley property be preserved as a historic site.

Pierre Samuel "P.S." du Pont (1870-1954) was president of E.I. du Pont de Nemours & Co. (more commonly known as the DuPont Company or simply DuPont) from 1915 to 1919 and chairman of the board from 1919 to 1940. P.S. du Pont was the great grandson of Eleuthere Irenee du Pont (1771-1834), founder of E.I. du Pont de Nemours & Company. He was also an avid collector of documents on the early history of the du Pont family and the DuPont Company. This collection contains elements which were selected from both company and family papers. The material was lodged in du Pont's Wilmington office for a number of years prior to his death in 1954.