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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.