Showing Collections: 451 - 500 of 1485
Abstract: The Leeds & Northrup Company thrived throughout the twentieth century as a premier manufacturer of precision measuring and scientific equipment. The bulk of the Leeds & Northrup Electrical Power Systems records come from three employees, whose work at Leeds & Northrup spanned from 1928-1981: W. Spencer Bloor (1918-2002), Nathan Cohn (1907-1989), and S. Byron Morehouse. All worked within the Instrumentation and Controls for Electric Power Application Division. The records include papers, presentations, correspondence, memos, blueprints, and other materials relating to the development of a national electrical power grid in the United States. Technological and commercial developments in automatic electric power generation control, stabilization of energy load across regions, and problems of interconnection feature prominently in these materials.
Abstract: E.I. du Pont de Nemours & Company is a chemical company more commonly referred to as the DuPont Company. The company was established in 1802 by Pierre Samuel du Pont de Nemours (1739-1817) and his son Éleuthère Irénée du Pont (1771-1834) for the production of gunpowder. The papers in this collection date from the lifetime of E.I. du Pont and document important aspects of the early history of the DuPont Company.
Abstract: Eleuthera du Pont Smith (1806-1876) was the daughter of Eleuthère Irénée du Pont (1771-1834) and Sophie Madeleine Dalmas du Pont (1775-1828). This collection contains an invitation she received to attend the Lafayette Ball in Philadelphia in 1824.
Dates: 1824 September
Abstract: 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.
Abstract: Between 1802 and 1921, Eleutherian Mills was a gunpowder mill site used for the manufacture of explosives by the du Pont family business, which was founded by Éleuthère Irénée "E.I." du Pont (1771–1834). Longwood Gardens is a series of formal display gardens in Kennett Square, Pennsylvania, that was developed by Pierre S. du Pont (1870-1954), a descendent of E.I. du Pont. These are aerial views of the residence at Eleutherian Mills and Longwood Gardens taken by Dallin Aerial Surveys Company.
Dates: circa 1930s
Abstract: From 1802 to 1921, Eleutherian Mills was a gunpowder mill site used for the manufacture of explosives by the duPont family business. The name also refers to the house and gardens on the hill above the mills, which was the first duPont family home in America. This collections contains slides and color snapshot photographs of the garden at Eleutherian Mills. Also included is an 8 mm. home movie.
Dates: circa 1950-1970
Abstract: This collection contains research reports for the purpose of developing and elaborating exhibits and interpretations of the Hagley Museum. The reports were prepared by a permanent research staff and by participants in the Hagley Fellowship Program. The research reports also include scholarly articles that use Hagley's collections or are about subjects that pertain to Hagley's mission.
Abstract: Eleutherian Mills is the house built by Eleuthère Irénée du Pont (1771-1834), above his gunpowder mills, the E.I. du Pont de Nemours & Company. It served as a home to the du Pont family for generations, the last being Louise du Pont Crowninshield (1877-1958). The collection contains material related to the restoration of the home prior to Crowninshield occupying it. Also included are materials related to a road to the Eleutherian Mills and Nemours residences, repairs to the iron bridge across the Brandywine, and description of E.I. du Pont's garden.
Abstract: Eleuthère Irénée du Pont (1921-1994) 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. E.I. du Pont de Nemours & Company is a chemical company more commonly referred to as the DuPont company. This collection consists of graphic materials including a photographic print of Eleuthère Irénée du Pont (1921-1994), booklets, a copy of a photographic print of Johan Andreas Philip Ludwig (1753-1803), the Ludwig family crest and a genealogy of the Pelleport family.
Abstract: Éleuthère Irénée du Pont de Nemours (1771–1834) was a French American chemist and industrialist who founded the gunpowder manufacturer, E.I. du Pont de Nemours and Company. This ledger documents his accounts current between the years 1814 and 1818.
Abstract: This collection primarily consists of E.I. du Pont's personal and business correspondence; writings and notes; school materials; memoranda on manufactures and tariffs; legal agreements; patents; and land surveys. Also included are Sophie (Dalmas) du Pont's correspondence and household account records.
Abstract: Eleuthère Irénée du Pont (1771-1834), with his father Pierre Samuel du Pont de Nemours (1739-1817), was the founder of E.I. du Pont de Nemours & Company. This collection includes his recipts for hotel and livery stable bills.
Abstract: 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.
Abstract: Elliott, Johnson & Co. was a well-known banking and brokerage firm of Wilmington, Delaware, in the late nineteenth century. Henry du Pont (1812-1889) was an American military officer and son of Eleuthère Irénée du Pont (1771-1834), founder of E.I. du Pont de Nemours & Co., and Sophie Madeleine Dalmas du Pont (1775-1828). The collection consists of two letters from Elliott, Johnson & Co. regarding the purchase of bonds in two Florida railroads, the Sanford & Lake Eustis Railroad Company and the Jacksonville, Tampa & Key West Railway Company.
Abstract: Ellis Leroy "Lee" Hawk, Jr. (1926-2012) was a chemical engineer with Hercules Inc., and later the engineering director at Himont. He was involved in establishing polypropylene plants all over the world during the 1950s through the 1980s. This small collection consists of a scrapbook of photographs showing plant construction and a travel memoir written by Hawk about his career in the chemical industry. The memoir provides context for the scrapbook and an interesting portrait of an American businessman during the early stages of globalization.
Dates: circa 1990; 2005
Abstract: Elmer Sperry (1860-1930) was one of America’s electric pioneers. He founded the Sperry Gyroscope Company in order to develop, manufacture, and market marine gyrostabilizing devices. The papers document Sperry's research and development work and entrepreneurial activities.
Abstract: Elmer A. Sperry (1860-1930) was an electrical engineer who established the Electric Light, Motor, and Car Brake Company in 1883 and then founded the Sperry Electric Mining Machine Company in 1886. After selling his patents to General Electric, he went to work for the company as a consultant. This collection includes original materials, as well as copy work from other sources and images which show Sperry's inventions; there is some ephemera, family photos, employees, and views of the Sperry Company's Brooklyn drafting rooms.
Abstract: Elva M. Chandler (1900-1990) was an active clubwoman, active in many women's professional, church, and political organizations and president of the local Business and Professional Women's Club. She was best known for her involvement in the Delaware Federation of Business and Professional Women's Clubs (BPWC) and belonged to the Christina branch. Chandler's papers document her role in business and professional women's organizations and the changing role of women in business life from the 1950s to the 1970s.
Dates: 1917-1988; Majority of material found within 1965-1972
Abstract: Emile F. du Pont (1898-1974) was director of the Employee Relations Department for DuPont Company beginning in 1945. His papers largely consist of speeches he gave, most of which were given to DuPont employees, on the history of the company. There are also files related to his role in the National Safety Council and production of "The Du Pont Story" film.
Abstract: 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.
Abstract: The records consist of photocopies of miscellaneous documents of the Empire Steel and Iron Company, the originals of which are in the possession of the National Canal Museum at Easton, Pa. Most of them seem to have come from the Mount Hope site. There is another small collection of miscellaneous materials from the field office of the Mount Hope Mine at the New Jersey Historical Society.
Dates: 1857-1991; bulk 1903-1918
Abstract: Edith N. McConnell (1880-1968) was a confectioner and caterer in Wilmington, Delaware from the 1920s through the 1950s. This small collection consists of photographs of wedding cakes, table settings, and restaurant interiors in Wilmington and Newark, Delaware, mostly dating from around 1945.
Dates: circa 1925-1946
Abstract: The rise and fall of Enron Corp., a natural gas utility transformed into the world’s largest energy trader, followed a pattern of boom and bust familiar in the history of American business. The records in this collection belonged to Herbert “Pug” Winokur, a member of Enron’s board of directors and chair of its finance committee. He used these records to prepare for depositions associated with the Enron bankruptcy. This collection contains meeting minutes, supporting materials and other documents relating to the Department of Justice investigation into the Enron Corp. from 1997 to 2002.
Abstract: Epcot, the Experimental Prototype Community of Tomorrow, opened in 1982. It was conceived by Walt Disney to "take its cue from the new ideas and new technologies that are now emerging from the creative centers of American industry." This booklet is a guide to the attractions at Future World and the World Showcase at the EPCOT Center in Florida. It also includes advertising matter for Eastman Kodak Company disc and instant cameras. Eastman Kodak Company, commonly known as Kodak, is best known for photographic film products, which it produced throughout most of its history. In 1982, Kodak launched the Kodak Disc film format for consumer cameras
Abstract: The Erie City Iron Works in Erie, Pennsylvania, was a major manufacturer of boilers, stationary and portable engines, and machinery for sawmills and steam riveting. These are five reproductions of nineteenth century photographs from the Erie City Iron Works. One is an exterior of the plant. The four others are posed photographs of employee groups.
Abstract: The Erie City Iron Works was founded by Pennsylvania capitalist Bethuel Boyd Vincent (1803-1876) as the Presque Isle Foundry in 1840. The Works was a major manufacturer of boilers, stationary and portable engines and machinery for sawmills and steam riveting as well as railroad freight and passenger cars. Their records are largely comprised of accounting records.
Abstract: The Erie City Iron Works in Erie, Pennsylvania, was a major manufacturer of boilers, stationary and portable engines, and machinery for sawmills and steam riveting. The collection consists of technical diagrams of engines.
Dates: circa 1912-1924
Abstract: This collection consists of the business records of Ernest Dichter and the several consulting firms through which he operated fully document his role as a pioneer of motivational research, from the beginnings of his career in the United States until a few months before his death.
Dates: 1936-1991; Majority of material found within 1956-1986
Abstract: Ernest Dichter (1907-1991) was one of the pioneers in consumer motivational research. He started his own consulting business in 1946. It was incorporated in New York as the Institute for Research in Mass Motivations, Inc. in 1952 and renamed the Institute for Motivational Research, Inc. in 1955. This collection consists of photographs, negatives, slides, contact sheets, and audio cassettes.
Abstract: Ernest du Pont (1880-1944) and his elder brother Francis Irenee du Pont (1873-1942) founded the U.S.F. Powder Company in 1919, which produced flashless cannon powder. This item is a cabinet card photograph of Ernest du Pont (1880-1944) as a young child.
Dates: circa 1883
Abstract: Ernest Munster (1885-1965) was an attorney and organized Lawyers International Corporation in 1930, with its office in New York City. Munster, the company's president, continued his association with the company through at least the mid-1940s. The Ernest Munster papers reflect his work which necessitated his familiarity with international trade and incorporation laws and taxation policies. The collection primarily consists of records Munster maintained during his years as president of Lawyers International Corporation, with some papers dating back to his employment with International Corporation Company in the late 1930s.
Dates: 1917-1946; Majority of material found within 1930-1939
Abstract: Ernst R. Habicht (1902-1987) was the general manager of E.I. du Pont de Nemours & Company's ammonia production plant at Belle, West Virginia. His papers include newspaper clippings, correspondence, a long memorandum, and a humorous poem by Habicht relating to the 1947-1948 strike at the Belle plant.
Abstract: Eugene Blery (1805-1887) was a French artist, engraver and lithographer. This collection contains two etchings of pastoral views of Nemours in Normany, France. One depicts the French ancestral home of the du Pont family.
Dates: 1851; 1870
Abstract: 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 papers of Eugene du Pont Jr. include reports to the DuPont Company Board of Directors by the executive committee and the treasurer of the DuPont Company. In addition, there are several copies of letters to du Pont family members.
Abstract: 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.
Abstract: Eugene Eleuthère du Pont (1882-1966) was an industrialist and a descendant of Pierre Samuel du Pont de Nemours (1739-1817) and his son, Éleuthère Irénée du Pont (1771-1834), who founded E.I. du Pont de Nemours & Company in 1802, a chemical company more commonly referred to as the DuPont Company. He attended Harvard University from 1899 to 1903, graduating with an A.B. degree before joining the family business. Eugene E. du Pont kept this scrapbook during his years at Harvard, continuing to the year of his world travels. There are a few pieces relating to the Harvard Class of 1903. However, the bulk of the material consists of articles, particularly poetry.
Abstract: Eugene S. Ferguson (1916-2004) was one of the founders of the discipline of the history of technology, both through teaching at Iowa State University and the University of Delaware and by working at the Smithsonian Institution and the Hagley Museum. This collection documents the first twenty years of the history of technology as an academic discipline, and networking among its practitioners.
Dates: 1937-2001; Majority of material found within 1960-1995
Abstract: The Everett Worthington Inc. records contain correspondence, purchase orders, design requests, and contractual letters. Clients include, but are not limited to, Stromberg-Carlson, Cincinnati Victor Company, Coca-Cola, Toastmaster, Story & Clark Piano Company, Gillette Safety Razor Company, Robert W. Irwin Company, Waterbury Clock Company and General Motors. Renderings, sketches and photographs detail completed projects. Chicago's 1933 A Century of Progress International Exposition, and the 1936 Great Lakes Exposition in Cleveland, Ohio are well represented. Everett E. Worthington was an industrial designer whose career began in 1915 in San Francisco, and continued in Chicago and New York City.
Abstract: Remington Arms Company is one of the oldest American manufacturer of firearms and ammunition the largest producer of shotguns and rifles in the United States. This film is a documentary short on target shooting, featuring a demonstration by expert marksmen.
Dates: circa 1960s
Abstract: The Textile Fibers Department of the DuPont Company was established in 1936 (known then as the Rayon Department) which specialized in researching and developing synthetic fibers for fabrics such as Rayon, Nylon, Teflon, Corian, and Kevlar. This collection consists of materials once housed in the library of the Experimental Station and culled after the sale of the textile fibers business. The collection has been arranged into six series: Vertical file; Translation logs; Miscellany; Project indexes; Publications; Speeches.
Dates: 1906-1998; Majority of material found within 1938-1993
Abstract: The DuPont Experimental Station is a large industrial research facility founded in 1903; focused on chemistry research. This collection consists primarily of group photographs of new employees in the Central Research Department at DuPont's Experimental Station in Wilmington, Delaware for the years 1922 to 1959. All individuals pictured are identified.
Abstract: The Belin plant in Moosic, Pennsylvania was built by the DuPont Company in 1908 for the production of black powder, which it was doing by 1912. This collection consists of photographs of the aftermath of an explosion that occurred there on August 1, 1930.
Abstract: The Paris Colonial Exposition was a six month exhibit held outside of Paris, France in 1931 displaying the culture and resources of the colonial possessions of France. Opening May 6, 1931, the exhibition was visited by an estimated crowd of seven to nine million people. This collection includes twenty eight photographs of architectural renderings of buildings at the exposition, two photographs of models of buildings, six photographs of the actual buildings (some under construction), and one portrait photograph of M. Marcel Oliver (circa 1880s-1940s), an organizer of the event and former Governor-General of Madagascar. Each photograph is stamped on the back and has the name of the architect responsible.
Abstract: Exposition Internationale of 1937, was held in Paris, France from 25 May to 25 November. The full title of the exhibition was, Exposition Internationale des Arts et Techniques dans la Vie Moderne, which translates to the International Exposition of Art and Technology in Modern Life. The viewbook contains ten postcards of views of the Exposition Internationale held in Paris in 1937. These show both aerial views and images of the exteriors of buildings
Abstract: This collection consists of thirty-five glass negatives and one box. It documents locations in Philadelphia, Pennsylvania’s Fairmount Park system. While the photographer is unidentified, and the images are undated and unlabeled, most images appear to depict Wissahickon Valley Park, historically part of the Fairmount Park system.
Dates: after 1908
Abstract: Felix Octavius Carr Darley (1822-1888) was an American illustrator known for his illustrations in works by well-known nineteenth century authors. The collection includes a microfilm copy of his 1853 account book which records his work for publishers.
Abstract: The Ferracute Machine Company of Bridgeton, New Jersey was a press and die business founded by Oberlin Smith (1840-1926), inventor, writer, manufacturer in 1863. The collection consists of materials assembled by Arthur J. Cox for the preparation of the company history, Ferracute: The History of an American Enterprise (1985). This collection has been arranged into seventeen series: Administration; Advertising; Employees; History; Machine tools; Military work; Unions; Patents; Press work; Frederick A. Parkhurst (FAP) Time Studies; Miscellany; Scrapbooks; Drawings; Orders; Payrolls; Press cards; and Account books.
Dates: 1863-1982; Majority of material found within 1937-1963
Abstract: The Ferracute Machine Company was a press and die business founded by inventor Oberlin Smith (1840-1926) in Bridgeton, New Jersey, in 1863. It was incorporated in 1877, and ceased operations in 1968. This group of Ferracute Machine Company records is a small fragment preserved by an employee that primarily contains legal files and financial statements.
Abstract: F.F. Slocomb Corporation was a manufacturer of special machinery and component parts. The Company was established as F.F. Slocomb & Company in 1898, in Wilmington, Delaware by Frank F. Slocomb (1860-1931). This collection consists largely of unidentified loose photographs of machinery produced by the company. There are six views taken on the shop floor; some of these show workers.
Abstract: F.H. Dow & Company was a manufacturer of chocolates and candy. This album contains of photographs from F.H. Dow & Company of Boston, Massachusetts, showing various box designs for Utopian chocolates.
Dates: circa 1910-1920
- Manuscripts and Archives 810
- Audiovisual Collections 673
- Published Collections 2
- Correspondence 223
- Railroads 112
- Advertisements 98
- Gunpowder industry 77
- Social history 77
- Chemical industry 70
- Explosives industry 63
- Exhibitions 62
- Financial statements 50
- Textile industry 48
- Research, Industrial 42
- Steel industry and trade 42
- Exhibition buildings 39
- Iron industry and trade 39
- Textile fibers, Synthetic 39
- Portraits 37
- Account books 36
- Ephemera 36
- Electronic industries 35
- Postcards 35
- Reports 35
- Scrapbooks 35
- Patents 34
- Ships 34
- Diaries 32
- Domestic relations 32
- Group portraits 32
- Wilmington (Del.) 32
- Aeronautics 31
- Marketing 30
- Photograph albums 30
- Construction projects 29
- Factories 29
- Minutes 29
- World War, 1939-1945 29
- Genealogies 28
- Panoramic photographs 28
- Railroads -- Rolling stock 28
- Testing laboratories 28
- Du Pont family -- Homes and haunts 27
- Inventors 26
- Industrial chemists 25
- Industrial design 25
- Papermaking 25
- Biography 24
- Dyes and dyeing 23
- Planographic prints 23
- Powder mills 23
- Weapons industry -- Employees 23
- Automobile industry and trade 22
- Investments 22
- Oral histories 22
- Industrial safety 21
- Packaging -- Design 21
- Railroad stations 21
- Aerial photographs 20
- Coal mines and mining 20
- Gunpowder, Smokeless 20
- Posters 20
- Blast furnaces 19
- Maps 19
- Merchants 19
- Pennsylvania 19
- Business and politics 18
- Chemical plants 18
- Iron and steel workers 18
- Sales promotion 18
- Steel-works 18
- Textile factories 18
- Industrial housing 17
- Philadelphia (Pa.) 17
- Technical drawings 17
- Trade associations 17
- United States -- History -- Civil War, 1861-1865 17
- Banks and banking 16
- Commerce 16
- Firearms 16
- Historic sites 16
- Laboratory notebooks 16
- Paper mills 16
- Railroads -- Buildings and structures 16
- Speeches 16
- United States. Navy -- Officers 16
- Wages 16
- World War, 1914-1918 16
- Computer industry 15
- Finishes and finishing 15
- Gardens 15
- Industrial films 15
- Nylon 15
- Printing industry 15
- Railroads -- Rolling stock -- Design and construction 15
- Receipts (Financial records) 15
- Dwellings 14
- Electric industries 14
- Europe -- Description and travel 14
- Industrial relations 14
- Mechanical engineering 14
- Real property 14
- Television 14 ∧ less
- English 1438
- French 55
- German 3
- Italian 2
- Spanish; Castilian 1
- Du Pont family 181
- E.I. du Pont de Nemours & Company 173
- Unknown 54
- Du Pont de Nemours, Pierre Samuel, 1739-1817 42
- Pennsylvania Railroad 38
- Du Pont, Samuel Francis, 1803-1865 31
- E.I. du Pont de Nemours & Company. Experimental Station 25
- Du Pont, Sophie Madeleine, 1810-1888 19
- RCA Corporation 18
- Du Pont, Eleuthère Irénée, 1771-1834 16
- Du Pont, H. A. (Henry Algernon), 1838-1926 16
- United States. Navy 16
- Dick, John A., 1879-1972 14
- New York World's Fair (1964-1965 : New York, N.Y.) 14
- Du Pont de Nemours, Francoise Robin Poivre, 1748-1841 13
- Joseph Bancroft & Sons Co 13
- New York World's Fair (1939-1940 : New York, N.Y.) 12
- Savery, Thomas H., 1837-1910 12
- Du Pont, Pierre S. (Pierre Samuel), 1870-1954 11
- Eleutherian Mills (Greenville, Del. : Estate) 11
- E.I. du Pont de Nemours & Company. Textile Fibers Department 10
- Jackson Laboratory (E.I. du Pont de Nemours & Company) 10
- Longwood Gardens (Kennett Square, Pa.) 10
- World’s Columbian Exposition (1893 : Chicago, Ill.) 10
- Carothers, Wallace Hume, 1896-1937 9
- Centennial Exhibition (1876 : Philadelphia, Pa.) 9
- Du Pont, Francis Gurney, 1850-1904 9
- Du Pont, Victor Marie, 1767-1827 9
- Greenewalt, Crawford H., 1902-1993 9
- Loewy, Raymond, 1893-1986 9
- Pusey and Jones Company 9
- Reading Company 9
- Baldwin Locomotive Works 8
- Bethlehem Steel Corporation 8
- Crowninshield, Louise du Pont, 1877-1958 8
- Du Pont, Henry, 1812-1889 8
- E.I. du Pont de Nemours & Company. Brandywine Works 8
- E.I. du Pont de Nemours & Company. Organic Chemicals Department 8
- Pusey & Jones Corporation 8
- Southeastern Pennsylvania Transportation Authority 8
- E.I. du Pont de Nemours & Company. Carney's Point Works 7
- E.I. du Pont de Nemours & Company. Central Research and Development Department 7
- E.I. du Pont de Nemours & Company. Chestnut Run Laboratories 7
- E.I. du Pont de Nemours & Company. Hagley Yard 7
- E.I. du Pont de Nemours & Company. Pioneering Research Laboratory 7
- Gentieu, Pierre A., 1842-1930 7
- Gilpin, Joshua, 1765-1841 7
- Hagley Museum and Library 7
- Hanford Engineer Works 7
- International Business Machines Corporation 7
- Maxim, Hudson, 1853-1927 7
- Philadelphia & Reading Railroad Co 7
- Victor Talking Machine Company 7
- Amtrak 6
- Century of Progress International Exposition (1933-1934 : Chicago, Ill.) 6
- Du Pont, Alfred I. (Alfred Irénée), 1864-1935 6
- General Electric Company 6
- Lea family 6
- Lehigh Valley Railroad Company 6
- Manhattan Project (U.S.) 6
- Penn Central Transportation Company 6
- Radio Corporation of America 6
- Thayer, Horace H., 1878-1959 6
- Young, William, 1755-1829 6
- Baltimore and Ohio Railroad Company 5
- Bauduy, Peter, 1769-1833 5
- Brandywine Manufacturers Sunday School 5
- Budd Company 5
- DeMirjian, Charles H., 1925-2021 5
- Du Pont, Irénée, 1876-1963 5
- E.I. du Pont de Nemours & Company. Engineering Department 5
- E.I. du Pont de Nemours & Company. Grasselli Chemicals Department 5
- E.I. du Pont de Nemours Powder Company 5
- General Motors Corporation 5
- Hagley Museum and Library. Library. Oral History Project Office 5
- Hercules Powder Company 5
- Louisiana Purchase Exposition (1904 : Saint Louis, Mo.) 5
- Lukens Steel Company 5
- National Association of Manufacturers (U.S.) 5
- Ramsay, William G. (William Gouverneur), 1866 - 1916 5
- Remington Arms Company 5
- University of Delaware 5
- All American Engineering Company 4
- American Car and Foundry Company 4
- American Car and Foundry Company. Jackson & Sharp Plant 4
- American Iron and Steel Institute 4
- American Telephone and Telegraph Company 4
- Bauduy, Victorine du Pont, 1792-1861 4
- Bethlehem Steel Company 4
- Bradford, Phoebe George, 1794-1840 4
- Brandywine Hundred (Del.) 4
- Central Railroad of New Jersey 4
- ConRail 4
- Du Pont Motors, Incorporated 4
- Du Pont, Alfred Victor, 1798-1856 4
- Du Pont, Charles I. (Charles Irénée), 1797-1869 4
- Du Pont, Jean Kane Foulke, 1891-1985 4
- Du Pont, Margaretta Lammot, 1807-1898 4
- Du Pont, Richard C. (Richard Chichester), 1911-1943 4
- Du Pont, T. Coleman (Thomas Coleman), 1863-1930 4 ∧ less