Samuel Francis du Pont (1803-1865) was a Rear Admiral in the United States Navy and fought in the Mexican-American War and the Civil War. He was the fourth child and second surviving son of Victor Marie du Pont (1767-1827) and his wife, Gabrielle Joséphine de la Fite de Pelleport (1770-1837). The collection contains an original letter and photocopies of letters regarding cost for Abraham Hart (1810-1885) publishing an essay by Henry Winter Davis (1817-1865) on the doctrine of intervention and non-intervention in diplomacy and international affairs.

Samuel Francis Du Pont (1803-1865) was a Rear Admiral in the United States Navy and fought in the Mexican-American War and the Civil War. He was the fourth child and second surviving son of Victor Marie du Pont (1767-1827) and his wife, Gabrielle Joséphine de la Fite de Pelleport (1770-1837). His papers document du Pont's professional and personal life against the background of the pre-Civil War service.

Sophie Madeleine du Pont (1810-1888) was the youngest daughter of Eleuthère Irénée du Pont (1771-1834), founder of E.I. du Pont de Nemours & Co., and Sophie Madeleine Dalmas du Pont (1775-1828), and the wife of Samuel Francis du Pont (1803-1865). The collection contains twelve letters and documents regarding the du Pont family, discussing family and church news, as well as a letter from Samuel B. Brown regarding the Brandywine Manufacturers' Sunday School.