Dr. Alexis Irénée du Pont (1843-1904) was a businessman and non-practicing physician who resided in both Louisville, Kentucky, and Wilmington, Delaware. The Alexis Irénée du Pont family papers primarily consist of both outgoing and incoming correspondence from A. I. du Pont and his immediate family.

Amelia Elizabeth du Pont (1796-1869) was a granddaughter of Pierre Samuel du Pont de Nemours (1739-1817) founder the E.I. du Pont de Nemours & Company, a chemical research, and manufacturing company. She was the eldest child of Victor Marie du Pont (1767-1827) and Gabrielle Josephine de la Fite de Pelleport (1770-1837). The collection contains a photocopy of the act of the Senate and House of Representatives of the State of Delaware by which Amelia Elizabeth du Pont's (1796-1869) marriage to Nathaniel Perkins, alias Nathaniel H. Clifford, was dissolved and a declaration that their child Gabrielle du Pont (1813-1891) was legitimate.

The Crofton and Shubrick families were descendants of a prominent French American diplomat and businessman, Victor Marie du Pont (1767-1827), and represent middle-class American women in the mid-to-late nineteenth century. Two generations of women married military men who were stationed across the world. This collection spans three generations of women (Julia du Pont Shubrick, Gabrielle Josephine Shubrick Crofton, and Julia du Pont Crofton Walcutt) from these families and contains correspondence regarding everyday life.

The Dimmick family were descendants of the founders of E.I. du Pont de Nemours & Company, a chemical research and manufacturing company. The collection contains a microfilm copy of correspondence between Joanna (Smith) du Pont (1815-1876) and her daughter, Joanna (du Pont) Dimmick (1854-1901), and letters from Sophie M. du Pont (1810-1888) to her niece, Dimmick, and the latter's step-daughter, Lavinia Elizabeth Dimmick (1874-1946). The letters are personal in nature, including du Pont family news.

This collection of family correspondence encompasses several generations of the du Pont, Kemble, and de Forest families. Victorine du Pont (1825-1887), the eldest child of Alfred Victor du Pont (1798-1856), senior partner in E.I. du Pont de Nemours & Company, and Margaretta Elizabeth (Lammot) du Pont (1807-1898), married Peter Kemble (1825-1887), son of William Kemble the company's New York business agent. One of their daughters, Meta Kemble (1852-1933), married New York artist Lockwood de Forest (1850-1932).

Eleuthère Irénée du Pont (1771-1834), founder of E.I. du Pont de Nemours & Co., and Sophie Madeleine Dalmas du Pont (1775-1828) had four daughters. This group of materials within the Winterthur Manuscripts collection contains the papers of the three eldest: Victorine (du Pont) Bauduy (1792-1861), Evelina (du Pont) Bidermann (1796-1863), and Eleuthera (du Pont) Smith (1806-1876), as well as their respective husbands: Ferdinand Bauduy (1791-1814), James Antoine Bidermann (1790-1865), and Thomas MacKie Smith (1809-1852). Victorine du Pont Bauduy and Eleuthera du Pont Smith were teachers at the Brandywine Manufacturers' Sunday School (BMSS), a nonsectarian school offering classes in reading, writing, arithmetic, and Bible lessons. Evelina du Pont Bidermann spent much of her adult life traveling alongside her husband and then building the Winterthur mansion in Delaware. Their papers document details about their education, social life, family, attitudes, and activities through incoming and outgoing correspondence, as well as personal papers such as diaries and account books.

Eleuthera du Pont Smith (1806-1876) and Sophie Madeleine du Pont (1810-1888) were daughters of Eleuthère Irénée du Pont (1771-1834) and Sophie Madeleine Dalmas du Pont (1775-1828). This collection contains letters from the du Ponts to Mary Wilkinson, a former student at the Brandywine Manufacturers' Sunday School. The letters discuss domestic matters, including family news, health, faith, and needlework for the mills.

Elise Simons du Pont (1849-1919) was the wife of Francis Gurney du Pont (1850-1904), a vice president of E.I. du Pont de Nemours & Co., a chemical company more commonly referred to as the DuPont Company. The records consist of itemized household receipts, primarily from three Wilmington, Delaware grocers and one from John Wanamaker's department store in Philadelphia. The receipts give descriptions of goods and prices.

This series documents Ellsworth Warner’s courtship of Mellie Bisbee and their subsequent divorce and includes a letterbook and correspondence between Mellie and her sons. The Warner papers document the sale and incorporation of Midland Linseed Products Company into what became Archer Daniels Midland Company. The series also includes Litchfield’s research activities with the Warner papers.

Emma E. Holmes (1838-1910) was the daughter of Dr. Henry M. Holmes (1790-1854) and Eliza Ford Gibbes (1808-1875). The diary chronicles Holmes's life in Charleston, South Carolina, during the Civil War, detailing the Charleston fire of December 1861, visiting army camps, taking a position as governess and tutor, and plundering Union troops near the end of the war.

Eugene du Pont Jr. (1873-1954) was a director of the E.I. du Pont de Nemours & Company from 1917 until 1954, and a great grandson of company founder, Éleuthère Irénée du Pont (1771-1834). The collection contains the personal papers of Eugene du Pont, Jr., and the records of the Kinloch Gun Club, a private shooting club which he founded. It also contains a separate collection of correspondence between his brother Alfred I. du Pont, vice president and general manager of the DuPont Company, with his assistant Frank L. Connable, which is an important source for the history of the company in the early 1900s.

Eugene du Pont (1840-1902) was the eldest son of Alexis I. du Pont (1816-1857) and Joanna Smith du Pont (1815-1876) and joined the E.I. du Pont de Nemours & Co., eventually rising to president in 1899. The bulk of the papers in this small collection are letters sent to Eugene du Pont by his mother while he was in school in Philadelphia from 1857 to 1859.

Gabrielle Josephine de La Fite de Pelleport (1770-1837) was the wife of Victor du Pont (1767-1827), a French American diplomat, politician, and businessman. He was the brother of Éleuthère Irénée du Pont (1771-1834), the founder of the E.I. du Pont de Nemours & Company. The account book is supposedly the household account book of du Pont and contains handwriting of various people, including her son Charles I. du Pont (1797-1869). Entries include purchases of coal, whiskey, soap, candles, and other items, as well as construction materials and tools.

Henry Belin du Pont (1898-1970) was a research engineer with General Motors and the vice president of E.I. du Pont de Nemours & Company from 1939 to 1963. This collection contains correspondence from several generations of the family from the early nineteenth through the twentieth century, including Francis Gurney Smith (1784-1873), Elizabeth (Eliza) MacKie Smith (1787-1861), Joanna Smith du Pont (1815-1876), Frances du Pont Coleman (1838-1902), Eleuthera "Ella" du Pont Bradford (1848-1906), Eleuthera Bradford du Pont (1873-1953), Alicia Bradford Maddox (1875-1920) and Phoebe George Bradford (1794-1840).

Lavinia Dimmick Rée (1874-1946) was a descendant of the founders of E.I. du Pont de Nemours & Company, a chemical research and manufacturing company. She was the daughter of Irene du Pont (1845-1877) and Edward Dimmick (1843-1895), and a great-niece of Sophie M. du Pont (1810-1888). The records consist of two copies of a typewritten transcription of "Memories of Aunt Sophie" written by Rée about du Pont's home, Lower Louviers, during the late 1870s and 1880s.

Margaretta “Meta” du Pont Coleman (1862-1938) was a descendant of Pierre Samuel du Pont de Nemours (1739-1817) who founded the E.I. du Pont de Nemours & Company with his son Eleuthère Irénée du Pont (1771-1834) in 1802. The E.I. du Pont de Nemours & Company is a chemical company more commonly referred to as the DuPont company. The Margaretta E. "Meta" du Pont Coleman Papers primarily consist of family correspondence collected by Meta Coleman.

Martha Brown Ogle Callender Forman (1788-1864) was the second wife of Gen. Thomas Marsh Forman (1758-1845). Her diaries are entirely personal, with many details of the daily life of enslavers and the enslaved at Rose Hill, a Cecil County, Maryland plantation.

Mary Belin (1839-1913) married Lammot du Pont (1831-1884) and had eleven children, many who were prominent in the building up of the E.I. du Pont de Nemours & Company. The volume consists of a typed transcript of letters originally sent to Mary Belin du Pont (1839-1913) by her daughters Louisa ("La") (1868-1926), Sophie M. ("Tabby") (1871-1894), Isabella ("Bella") (1882-1946), and Margaretta ("Peg") (1884-1973) in 1894. The letters center around a single incident wherein Sophie, who was suffering from tuberculosis, was sent to Colorado Springs for a cure.

Mary Belin (1839-1913) married Lammot du Pont (1831-1884) and had eleven children, many who were prominent in the building up of the E.I. du Pont de Nemours & Company. The collection includes a carbon copy of a typed transcript from Belin's recipe book. The recipe book included dishes typical of middle class Americans in the Northeast in the early and mid-nineteenth century, as well as home remedies, household hints, and how to prepare paints and dyes.

Wallace Hume Carothers (1896-1937) was chemist and inventor of Neoprene artificial rubber and Nylon synthetic fiber. He worked as a chemist in E.I. du Pont de Nemours & Company's Fundamental Research Program from 1928 until his death in 1937. This collection contains five interviews conducted in July and August of 1978 with Wallace Carothers’s friends and colleagues. The interviewees primarily share stories and focus on their feelings surrounding Carothers’s personality, work, and suicide.

Wallace Hume Carothers (1896-1937) was a chemist and inventor of Neoprene artificial rubber and Nylon synthetic fiber. He worked as a chemist in E.I. du Pont de Nemours & Company's Fundamental Research Program from 1928 until his death in 1937. The records include the handwritten transcripts of a series of interviews with persons who knew and worked with Carothers, conducted in 1978 and 1979. The interviews were conducted by Adeline Bassett Cook Strange (1917-2004), a teacher, researcher, and volunteer who spent her life dedicated to various charitable projects around Wilmington, Delaware.

William Gouverneur Ramsay (1866-1916) was a civil engineer for railroads and explosives corporations, including Repauno Chemical Company, Great Northern, and DuPont Company. His wife, Caroline “Lena” Johnston Canby (1872-1958) was interested in cultural and educational institutions and traveled extensively. The Ramsay family papers primarily consist of William G. Ramsay's personal and business papers, as well as his family's personal papers which primarily consist of correspondence, much of it between William Ramsay and Lena Ramsay prior to and after their marriage. the letters describe social life in Wilmington, literature, courtship and marriage, household administration, family life, child rearing and health.

Rockland is an unincorporated old mill village in New Castle County, Delaware, and was later surrounded by du Pont family estates. The collection contains twelve edited oral history transcripts by Mary Laird Silvia (1938-2013) with people who lived in Rockland.

The Crofton and Shubrick families were descendants of a prominent French American diplomat and businessman, Victor Marie du Pont (1767-1827), and represent middle-class American families in the mid-to-late nineteenth century. The collection includes a small amount of material from the Shubrick and Crofton family from the nineteenth century to mid-twentieth century.

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). In the letter to Mary Ann (Hogg) Brunot (1822-1899), du Pont thanks her for a sermon Brunot sent and reflects du Pont's concern with religious and domestic matters.

Thomas H. Savery (1837-1910) was president of Pusey, Jones and Company, a shipbuilder and papermaking machinery manufacturer in the late nineteenth and early twentieth centuries. In 1864 he married Sarah Pim Savery (1837-1928). This collection consists of ther business and personal papers of Thomas H. Savery, primarily related to his papermaking machinery ventures, and twenty-nine diaries of Sarah Pim Savery.

Victor Marie du Pont (1767-1827) was a French diplomat. In 1794, he married Gabrielle Joséphine de La Fite de Pelleport (1770-1837), and a year later they came to the United States, where he was appointed as consul at Charleston, South Carolina. They returned to France in 1798, but came back to the United States in 1800 with their children; his father, Pierre Samuel du Pont de Nemours (1739-1817); and his younger brother, Éleuthère Irénée du Pont (1771-1834), and his family. Victor and Joséphine du Pont had five children, four surviving to adulthood: Amelia Elizabeth (1796-1869), Charles Irénée (1797-1869), Samuel Francis (1803-1865), and Julia Sophie (1806-1882). (The papers of Samuel Francis Du Pont, husband of Sophie Madeleine Du Pont, are held in Group IX of the Winterthur Manuscripts.) The collection is arranged into three series: Amelia du Pont papers, Charles Irénée du Pont and his wives' papers, and Julia (du Pont) Shubrick and her husband, Irvine Shubrick papers. The papers consist primarily of personal correspondence with family and friends.

Victorine du Pont (1792-1861) was the eldest child of Eleuthère Irénée du Pont (1771-1834), founder of E.I. du Pont de Nemours & Company, and Sophie Dalmas du Pont (1775-1828). Ferdinand Bauduy (1791-1814) was the son of Peter Bauduy (1769?-1833), business partners with du Pont in DuPont, Bauduy, & Co., and Theresa Bretton des Chapelles (1773-1837). This collection is a copy of their marriage certificate in 1813.

Victorine du Pont (1792-1861), the eldest child of Eleuthère Irénée du Pont (1771-1834), founder of E.I. du Pont de Nemours & Company, and Sophie Dalmas du Pont (1775-1828). The album contains poetry and verses written by Victorine and her friends and family, sketches, and watercolors.

Walt Biddle (1925-1995) was a gardener in the household of Louise du Pont Crowninshield (1877-1958) and Francis B. Crowninshield (1869-1950) at Eleutherian Mills in Greenville, Delaware. In his oral history interview transcript, Biddle describes the Crowninshields and life at Eleutherian Mills in the 1940s and 1950s.

Wilhelmina du Pont (1906-2000) was the daughter of William K. du Pont (1875-1907) and Ethel Hallock (1876-1951), a fourth generation descendent from E.I. du Pont (1771-1834). The letters are to Wilhelmina du Pont from her cousin Alice (Belin) (Mrs. Pierre S. du Pont) (1872-1944); mother Ethel (Mrs. William Kemble du Pont); cousin Alice (du Pont) (Mrs. T. Coleman du Pont) (1863-1937); and uncle Pierre S. du Pont (1870-1954).

William du Pont (1855-1928) was an industrialist and member of the promienent du Pont family of Delaware, whose family business was the E.I. du Pont de Nemours & Company, also known as the DuPont Company which was a large manufacturer of gunpowder. He worked for the first DuPont dynamite manufacturer, Repauno Chemical Company, as secretary and treasurer (1880-1884) and after the tragic death of Lammot du Pont (1831-1884), as president (1884-1892). This small group of papers encompass both correspondence and various financial and investment accounts, largely covering his ten years spent in England after leaving the United States in 1893.

William Ferris, II (1822-1909) was, along with Philip Garrett (1814-1896), a senior partner in the firm of the Ferris & Garrett company, a supplier of plumbing fixtures for gas, steam, and water service in Wilmington, Delaware. This collection consists of thirty-eight glass plate negatives, mostly of unidentified people and interiors, photographed by William Ferris, II.

William Gouverneur Ramsay (1866-1916) trained as a civil engineer at the University of Virginia, finishing his course work in 1887. After a career working at various times in canal, railroad, chemical, dynamite, and coal industries, in 1903, Ramsay became Du Pont's chief engineer and directed the construction of many of the largest explosives factories in the United States. In 1916, Ramsay became a director and vice president of E.I. du Pont de Nemours & Company, in addition to retaining his position as chief engineer. The William G. Ramsay family correspondence comprises sixty-four letters. They are largely addressed to William himself, from a variety of interlocutors, but mostly members of his own family. The majority of the letters are written by women, and thus provide a powerful picture into women’s lives and roles in the Ramsay family at the turn of the century across the Eastern seaboard.

The Wood family was founders of one of Philadelphia's great Quaker mercantile and manufacturing families, and within a couple of generations founded the Wawa Dairy Farms. The papers were primarily collected by Julianna Randolph (1810-1885), wife of Richard D. Wood (1799-1869), and include correspondence from Julianna Randolph, her parents Edward (1784-1834) and Mary Taylor Randolph (1790-1868), and her husband Richard Wood. The letters are almost entirely limited to correspondence within the Wood-Randolph kinship group.

Samuel Gardiner Wright (1781-1845) was a West Jersey Quaker merchant and ironmaster who conducted a wide-ranging mercantile business based in Philadelphia, iron furnaces in the New Jersey Pine Barrens and in southern Delaware and maintained a country house and farm in Monmouth County, N.J. The papers document his varied business interests, especially iron manufacture and sales. There are smaller quantities of papers from his wife, sons and grandson.