A.R. Moen (1799-1867) was a traveling agent for the Collins & Company, a tool manufacturer. In the letter to the company, Moen discusses and provides a sketch of a new axe he has invented.

A. Sonnin Krebs (1877-1969) was a chemical engineer and president of the Krebs Pigment & Chemical Company. This collection contains twenty-one letters to Krebs, primarily personal in nature, and include letters from Pusey & Jones Company, William Sellers & Co., Jacob A. Riis (1849-1914), and E.A. Wilson.

Dr. Alexis Irénée du Pont (1843-1904) was a businessman and non-practicing physician who resided in both Louisville, Kentucky, and Wilmington, Delaware. He was a grandson of Éleuthère Irénée du Pont de Nemours (1771-1834), the eponymous founder of the E.I. du Pont de Nemours & Company in Wilmington, Delaware, and son of Alexis Irénée du Pont (1816-1857) and Joanna Maria Smith du Pont (1815-1876). The collection contains correspondence between Alexis I. du Pont Jr. and his mother Joanna while he was attending the Episcopal Academy in Philadelphia. In addition, there are also letters from his father and sister.

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.

Alfred Victor du Pont (1900-1970) was a partner in the Wilmington, Delaware, architectural firm of Massena and Du Pont, and he was the third child of Alfred I. du Pont (1864-1935) and his first wife Bessie Gardner du Pont (1864–1949). This small collection includes both business and personal papers. The largest portion is made up of Alfred V. du Pont's correspondence with his father, Alfred I. du Pont.

Alfred Victor du Pont (1798-1856) was the eldest son of E.I. du Pont (1771-1834) and a senior partner of E.I. du Pont de Nemours & Company. The collection contains three letters he wrote to William Kemble (1795-1881), operator of the West Point Foundry and DuPont powder sales agent in New York City, about sales and shipments of gunpowder and credits.

Alfred Victor du Pont (1798-1856) was a senior partner in E.I. du Pont de Nemours & Company, a gunpowder manufacturer. This collection of papers documents Alfred V. du Pont’s business affiliations, relations with other family members, and relationship with du Pont workers. The bulk is comprised of correspondence, and the collection also includes a small number of advertising circulars.

Alice Belin du Pont (1872-1944) was a member of several social clubs and became very involved with philanthropic work. She was the daughter of Henry Belin Jr. (1843-1918) and Margaretta Lammot Belin (1846-1927), and wife of Pierre S. du Pont (1870-1954). The letter is from du Pont to Haynes Battan (1898-1979), a Longwood employee.

Alice Lea Spruance (1876-1967) was the daughter of Delaware governor Preston Lea (1841-1916) and his first wife Adelaide Moore (1846-1888). Since the 1770s, the Lea family were among the largest flour mill operators at the Brandywine Falls, north of Wilmington, Delaware. This collection of personal and business papers document Spruance's personal investments, a diversified portfolio of stocks and bonds that was managed by her relative Alfred E. Bissell (1903-1975) of Laird, Bissell & Meeds, brokers. Also included are descriptions, anecdotes, memoranda, and clippings relating to Wilmington and the Brandywine area, particularly the Brandywine Mills, the source of the Lea family's wealth.

Horatio Allen (1802-1889) was a noted civil engineer and inventor, who worked with the Delaware & Hudson Canal Company, the South Carolina Canal and Railroad Company, the Croton Aqueduct, and the New York & Erie Railroad. The bulk of his the papers is personal correspondence (1818-1864), and biographical materials collected by his family. Also included is a small collection of Allen's business papers, particularly concerning his work on the New York & Erie Railroad.

Allen P. Carter (1906-2006) was the manager of the Service Department of Du Pont Motors Inc. and then Du Pont Motors Service Company. His papers are a series of fragments covering his association with Du Pont Motors Inc. and automobile racing and restoration.

Bartley Crucible & Refractories, Inc. manufactured graphite crucibles in a plant at 67 Oxford Street in Trenton, New Jersey, a major center for the pottery industry. The company was originally named the Jonathan Bartley Crucible Company and was incorporated on February 24, 1908. This collection consists of the business records of the firm throughout its various name changes and the personal papers of two owners: Lewis H. Lawton (1876-1953), a former master bricklayer, and Walter L. Shearer (1900-1984), a ceramic engineer who had been a consultant to Bartley since 1930. None of the records are complete. The business records and the Shearer papers and ephemera represent selections of much larger bodies of material, while the Lawton papers are an accidentally preserved sample from the plant. Substantive correspondence has been sifted from a large mass of orders, bills, and receipts. A sample of more routine correspondence has been saved to give an accurate picture of each firm's trading relationships. The Shearer materials have been sampled to present a picture of his education, personality, and social life.

The Bauduy family was associated with the prominent du Pont family, who immigrated to the United States from France in 1802 and established the E.I. du Pont de Nemours & Company, which manufactured gunpowder at mills on the banks of the Brandywine River just north of Wilmington, Delaware. Peter Bauduy (1769?-1833), a French refugee from Santo Domingo who was a partner of Eleuthère Irénée "E.I." du Pont (1771-1834). This collection contains correspondence of Hélène Bauduy (1806-1881), Peter Bauduy's daughter, and Alexandre Aristide Bretton de Chapelles (1799-1850), and a journal kept by Eulalia Keating (1801-1873), Bauduy's daughter-in-law.

The Bauduy family was associated with the prominent du Pont family, who immigrated to the United States from France in 1802 and established the E.I. du Pont de Nemours & Company, which manufactured gunpowder at mills on the banks of the Brandywine River just north of Wilmington, Delaware. Peter Bauduy (1769-1833), a French refugee from Santo Domingo who was a partner of Eleuthère Irénée "E.I." du Pont (1771-1834). The bulk of the collection consists of letters from Juliette Bauduy (1773-1837) to her daughter Mimika (1793-1855). Also included are letters from Peter and Juliette to her sister and the Bauduy children to their aunt.

The records of the Bethlehem Steel Corporation are a series of fragments, lacking the complete runs of corporate and executive documents that normally comprise a business archive. The surviving records give a reasonable overview of the company's history and activities, but one which is lacking in depth.

Correspondence and memorabilia of its executive officers consist largely of material collected by Robert McMath, Vice President (Finance) and Secretary. These include organization papers, directories, annual and quarterly reports to the stockholders and internal statistical reports. McMath’s correspondence deals with an assortment of subjects, including those related to the financial downturn of the 1930s and its effect on business and industry. Other letters pertain to plant visits, construction activities, destruction of securities, financial progress of competing steel companies, investments, the benefits of free enterprise over communism, and Bethlehem’s contribution to World War II. Although the bulk of the letters are addressed to McMath, some are directed to Bethlehem Steel Chairman Eugene G. Grace and Charles Schwab.

There are bound collections of documents regarding major mergers and acquisitions and the issuance of stock and bond issues, these documents are most useful in tracing the evolution of corporate structure. Also from McMath's office are scattered legal files of which the most important is a transcript of testimony from the anti-trust proceedings barring the merger with the Youngstown Sheet & Tube Company in 1968.

A small body of letters and fragments recovered from the Graystone mansion property at Coatesville, Pennsylvania, relating to the Brandywine Iron Works and Nail Factory during the time when Rebecca Webb Pennock Lukens (1794-1854) was proprietor after the death of her husband.

The Brandywine Manufacturers Sunday School (BMSS) was organized in 1817 as a non-sectarian school for the children of the local factory workers, with instruction in reading, writing, arithmetic, and religion. Éleuthère Irénée du Pont (1771-1834), founder of the DuPont Company, was one of its chief subscribers, and the school building was located on his property. Primarily generated and maintained by the du Pont women, the BMSS records include the school's constitution, and financial records such as bills, receipts, and accounts. Most of the records pertain to students with information about premiums which were given as rewards for attendance and scholarly excellence.

The collection consists of a synthetic historical file assembled for public relations purposes at Budd Company's Michigan headquarters.

Consists of Irv Koons's business records containing correspondence with clients, marketing research studies, and public relations material.

The Technical Department at DuPont's Carney's Point Works was established to collaborate with scientists at the DuPont Experimental Station and Eastern Laboratory of the Repauno Works to develop new products, maintain quality control, and improve products and processes. The collection focuses on the department's start-up period (1906-1910) and the two World Wars.

This collection includes ephemera, postcards, films, advertisements, photographs, documents and objects relating to the history of salt. The collection was assembled by Carol Litchfield (1936-2012), a biologist and biochemist with an interest in halophiles and salt history. These items document the history and development of salt manufacturing throughout the world. Historic and modern methods of salt harvesting are depicted from various areas around the world.

Additionally, this collection includes documentation of Carol’s personal research and participation in salt related conferences and programs.

Carter Litchfield (1932-2007) an organic chemist who studied and specialized in edible fats and oils. In the course of his career Litchfield also built an interesting and significant collection of books, manuscripts, and ephemera relating to the history of fatty materials. The collection is arranged into seven series and includes his research with animal fats and fatty materials, collecting activities, research and publication on the history of oil mills around the world; the papers of Julius Lewkowitsch, the first authority on fats and fatty materials; the papers of Ellsworth C. Warner, founder of the Midland Linseed Products Company; and the correspondence of Frech Chemist Michel Eugène Chevreul

Catherine C. Irving (1884-1982) was the wife of Alexander Duer Irving (1873-1941). He was an aide to President Woodrow Wilson (1856-1924) at the Versailles peace treaty negotiations in 1919 after World War I. The letter from Irving to W.W. Laird (1910-1989), she recounts an anecdote about Col. H.A. du Pont (1838-1926).

Charles L. Huston (1856-1951) was an executive in the family business, Lukens Steel, and was active in religious and civic affairs. His papers are primarily personal in nature and include fragmentary Lukens Steel records.

Founded in 1848 by Reverend Samuel Brincklé (1796-1863) and members of the du Pont family, Christ Church Christian Hundred located in Greenville, Delaware is one of the oldest Episcopal churches in the Diocese of Delaware. Their records chronicle the activities of Christ Church over a span of nearly one hundred fifty years and include administrative and vital records.

The Collection of Philadelphia merchants records comprises the papers of major and minor merchant houses in Philadelphia throughout the late eighteenth and early nineteenth centuries, and primarily documents trade with major port cities in Western Europe and the West Indies. Included are the papers of merchants Andrew Clow & Co., Dutilh & Wachsmuth, Manuel Eyre, and George Louis de Stockar, along with records of other miscellaneous merchants from the Philadelphia area. The records include correspondence, accounts, bills, orders, invoices and other material that give insight into the rise of capitalism in the Early Republic.

Pierre Samuel du Pont de Nemours (1739-1817) was a French political economist, writer, publisher, and public administrator. This collection contains photocopies of five complaints submitted to du Pont de Nemours when he was a deputy from Chevannes to the Assemblee des Trois Ordres du Bailliage de Nemours.

Cooper & Hewitt partners were iron businessmen who purchased ironworks, property, and iron mines. In 1845, a rolling mill complex was incorporated as the Trenton Iron Company, and in 1847 iron mines at Andover, New Jersey, were purchased. The records consist of two payroll sheets from 1848, as well as eighty-two inbound letters, mostly from 1849 to 1850. The letters are primarily operating reports from the superintendent of the Andover mine.

The correspondence files of Series I cover such subjects as ordnance contracts with Argentina, Brazil, Chile, Cuba, Italy, Russia and Turkey in the pre-World War I years (circa 1906-1913), general business correspondence and memoranda, sales letters, promotion notices, proposals and inquiries, etc. Correspondence regarding Bethlehem Steel's patent infringement suits with Midland Steel and Niles-Bement-Pond Company (1905-1909) are included. Also covered is the construction of an oil refinery in Argentina and the ore mines in Cuba, Puerto Rico, New York and New Jersey.

These topics generated large amounts of correspondence with a narrow focus. This Johnston filed by subject. In addition, Johnston corresponded with a large number of individuals and companies about a wide range of topics. These letters he filed by correspondent. Some correspondents rated their own individual file, while others, with whom Johnston corresponded infrequently, were grouped together in alphabetical folders. Series I reflects this system. Johnston filed his letters both by subject and by correspondent. Subseries A contains letters filed by correspondent, while Subseries B contains letters filed by subject.

Series IV. Correspondence, 1974-2013 pertains to both Kwolek’s personal and professional life detailing her work, various awards, and fan mail.

Company correspondence includes photographs of officials and company dinners, advertising, and folksy homilies sent by Billy Heller to inspire his sales force. One file describes the company’s activities during World War II. There are runs of several employee newsletters and magazines, including the Milprint Communiquė (1942-1945) carrying news of employees serving in the armed forces.

Ethel Lippman (1891-1987) and David Sarnoff (1891-1971) were friends in their youth; her parents supposedly objected to their marriage. The collection consists of a few copies of Ethel Lippman's handwritten letters and all of David Sarnoff's replies.

Crawford H. Greenewalt (1902-1993) was an executive with the DuPont Company and president of the firm from 1948 to 1962. He had a passion for the natural sciences, and combined his love of ornithology with photography. He was especially known for his high-speed photographs of hummingbirds. His ornithological interests included bird songs, the radiance of hummingbird feathers, and the evolution of shapes and sizes of birds in relation to their flight abilities. Greenewalt's personal papers are primarily focused on his retirement years and his avocational interests. The papers document Greenewalt's political activities in the Republican National Committee and include exchanges with many of the leading political and business figures of the day. Of particular significance are the papers describing Greenewalt's work in photography and ornithology, beginning in 1948. These materials trace his research interests in the hummingbird and bird flight and his trips to places like Brazil, Peru, Venezuela, the Antilles, New Guinea, and the Galapagos Islands in order to observe and photograph birds in their natural habitats. Other files describe Greenewalt's work on the visiting committee at the Massachusetts Institute of Technology (1965-1987), which evaluated the school's academic programs.

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 Curtis Paper Company was a small producer specializing in high-quality paper located in Newark, Delaware. Their records consist primarily of account books, with some organization papers, deeds, and correspondence.

David Thomas (1794-1882) was a Pennsylvania iron manufacturer who introduced into the United States the use of anthracite coal in the manufacture of pig iron. The papers consist of twenty-eight letters received by Thomas between May 1839 and 1842. They contain important new information on one of the textbook examples of nineteenth century technology transfer.

David Thomas (1794-1882) was a Pennsylvania iron manufacturer who introduced into the United States the use of anthracite coal in the manufacture of pig iron. The papers consist of typed transcripts twelve letters, the bulk of which were sent by David Thomas to his niece, Jane Harris Bowen, and nephew, David Harris, in Wales. The letters deal primarily with family news, but Thomas also writes about general business conditions, the level of prices and wages and the Civil War.

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.

The Directors of Industrial Research (D.I.R.) is a forum for the exchange of ideas and information on topics of mutual interest for directors of America's foremost industrial research laboratories, formed in 1923. The records of the Directors of Industrial Research are an important collection, primarily because of their documentation of the development of industrial research. These records provide ample opportunity for the study of a powerful elite of corporate researchers, and a close-up view of certain aspects of the relationship between science and big business in the twentieth century.

Pierre Samuel du Pont de Nemours (1739-1817) was a French political economist, writer, publisher, and public administrator. He was an advocate for a national educational system and promoted Franco-American trade relations. Françoise (Robin) Poivre (1748-1841) was the second wife of Pierre Samuel. Françoise Julienne Ile de France (Poivre) Bureaux de Pusy (1770-1845) was a daughter from Poivre's first marriage. This collection includes a small selection of correspondence, including details on the family's immigration to the United States from France and Bureaux de Pusy's financial problems.

Pierre Samuel du Pont de Nemours was a French political economist, writer, publisher, and public administrator. He was an advocate for a national educational system and promoted Franco-American trade relations. Francoise (Robin) Poivre du Pont was his second wife. His grandson, 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. This collection consists of twenty-three photocopied letters, primarily from Pierre Samuel du Pont de Nemours (1739-1817), but also Francoise du Pont de Nemours (1748-1831) and Samuel Francis du Pont (1803-1865). The correspondence is primarily to Marie Anne Lavoisier Thompson (1758-1836), a French chemist and close friend of the family.

Pierre Samuel du Pont de Nemours (1739-1817) was a French political economist, writer, publisher, and public administrator. Françoise Robin du Pont (1748-1841) was the second wife of du Pont de Nemours. The collection contains copies of letters of both du Pont de Nemours to Monsieur de la Fontaine, Jacques Necker (1732-1804), Philippe Nicolas Harmand (1759-1838), and Francoise Gabrielle Clemence Harmand.

Pierre Samuel du Pont de Nemours (1739-1817) was a French political economist, writer, publisher, and public administrator. Françoise Robin du Pont (1748-1841) was the second wife of du Pont de Nemours. The collection contains photocopies of letters written by both du Pont de Nemours regarding brochures.

Pierre Samuel du Pont de Nemours (1739-1817) was a French political economist, writer, publisher, and public administrator. Françoise Robin du Pont (1748-1841) was the second wife of du Pont de Nemours. The collection contains four letters from the du Ponts to Jonathan Russell (1771-1832), American Chargé d'Affaires in Paris.

The Du Pont descendants and allied families are the children of brothers Victor Marie du Pont (1767-1827) and Éleuthère Irénée "E.I." du Pont (1771–1834), as well as their grandchildren and relatives through marriage. Victor Marie du Pont and E.I. du Pont were the sons of Pierre Samuel du Pont de Nemours (1739-1817), a French political economist, writer, publisher, and public administrator. This collection consists of the papers of the descendants of Victor Marie and Eleuthère Irénée du Pont and members of allied families. The principal holdings are for Amelia Elizabeth du Pont (1796-1869) and Charles Irénée du Pont (1797-1869), children of Victor du Pont, and Charles's wife, Dorcas Van Dyke (1806-1838), as well as for Victorine du Pont Bauduy (1792-1861), Alfred Victor du Pont (1798-1856), and Eleuthera du Pont Smith (1806-1876), children of E.I. du Pont.

The Du Pont family is a prominent Delawarean family descended from Pierre Samuel du Pont de Nemours (1739-1817), a French political economist, writer, publisher, and public administrator who immigrated to America with his sons, Victor Marie du Pont (1767-1827) and Eleuthère Irénée du Pont (1771-1834), in 1800. In 1802, he founded E.I. du Pont de Nemours & Company with his younger son, Eleuthère Irénée du Pont. E.I. du Pont de Nemours & Company is a chemical research and manufacturing company more commonly referred to as the DuPont Company. This small set of materials contains business and personal papers. The collection is organized into three series: Correspondence, business, and personal documents; Copies and extracts of correspondence and other documents; and Illustrative materials.

This small collection of du Pont family miscellany came to Hagley from Winterthur as an assortment of various family items that did not relate to their individual library holdings. The items, though extremely fragmentary, represent over two centuries of du Pont family history.

Abraham Dupont (1572-1640) was the progenitor of the South Carolina branch of the Du Pont family. In France, he dealt in manufactures of brass and copper. This is a small collection of his papers and those of his immediate descendants. The documents include the earliest records still extant in the Du Pont family papers. They are important for the evidence of descent they offer and for details about the ancestors of Pierre Samuel du Pont de Nemours (1739-1817). Many relate to landed property in Rouen and in the nearby parishes of Fontaine-sous-Préaux and Roncherolles.

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).