Showing Collections: 301 - 350 of 1046
Abstract: E.B. (Edward Barnes) “Ted” Leisenring Jr. (1926-2011) was the CEO of a fourth-generation family coal-mining business. He was president of Westmoreland Coal from 1961 to 1988, and remained as chairman of the board until 1992. This collection consists of the Philadelphia corporate executive's business and personal papers and his immediate family, with estate papers of his father, mother and paternal grandfather.
Dates: 1888-2011; Majority of material found within 1953-2004
Abstract: E.B. (Edward Barnes) “Ted” Leisenring Jr. (1926-2011) was the CEO of a fourth-generation family coal-mining business. He was president of Westmoreland Coal from 1961 to 1988, and remained as chairman of the board until 1992. This small collection of photographs is from Leisenring’s personal office files, which date between 1954 and 1994. The photographs consist of group and individual portraits, snapshots. The bulk of the material centers around two events: the 1964 Westmoreland Coal Company expansion and the 1970 delegation to the USSR.
Abstract: Edith Marion DeBlois (1920-2000) was a native Canadian with an interest in foreign travel and a season pass to the Expo 67. Expo 67 was an international exposition that took place in in Montréal, Québec from April 27 to October 29, 1967 to celebrate Canada's centennial. The theme was "Man and his World." These materials were collected by DeBlois while attending Expo 67. This small collection includes many of the official guides and maps issued by the fair, as well as specialized pamphlets dealing with particular themes or exhibits. DeBlois also compiled a series of scrapbooks documenting her attendance at various exhibits and performances.
Abstract: Edith N. McConnell (1880-1968) was a confectioner and caterer in Wilmington, Delaware from the 1920s through the 1950s. The records consist of a three ledgers, containing business expenses and customer account books dating from 1937 to 1945, and from 1955 to 1956.
Abstract: The major portion of a collection of railroad public and employee timetables amassed by railroad enthusiast and historian Edward H. Weber (1934-), best known for his systematic photography of railroad stations and structures. Although the oldest date from the nineteenth century, most cover the period of decline and restructuring of North American passenger service that began in the Depression and accelerated in the years after World War II.
Dates: 1856-2009; Majority of material found within 1930-1976
Abstract: Edward M. Harrington (1866-1933) was a chemist and expert on blasting cap design. He held several positions at the Aetna Powder Company, eventually becoming superintendent of the dynamite works at Aetna, Indiana. Harrington then went on to work for the DuPont Company at various plants in the Operating Department until his retirement in 1921. Images in this collection are of dynamite and other explosive plants, including Aetna Powder Company plants in Newport, Rhode Island (electric blasting caps) and Aetna, Indiana, and DuPont Company plants in Repauno, New Jersey; Hopwell, Virginia, and many other locations. Photographs show buildings, office and plant interiors, many with workers, employee groups, housing, and recreation.
Dates: circa 1889-1920
Abstract: Edward “Ned” A. Hodge (1896-1978) was the Vice-President of the Pusey & Jones Corp. in charge of engineering and shipbuilding. This small collection consists primarily of photographs showing the exteriors of ships. There are two books which document ship voyages showing photographs alongside text.
Abstract: E.I. du Pont de Nemours & Company is a chemical company more commonly referred to as the DuPont company. This item is an advertising card for E.I. du Pont de Nemours & Co. Gunpowder manufactured on the Brandywine in Wilmington, Delaware and sold through dealers in Philadelphia, New York City and Boston.
Dates: circa 1820
Abstract: The DuPont Company constructed a dye works at Deepwater Point, New Jersey (also called just Deepwater, New Jersey) during World War I to enter the market for dyes left vacant by Germany's absence. This collection consists of fifteen panomaric photographs of views of the Deepwater Point, New Jersey dye works of the DuPont Company, including ground before building started, building exteriors, and a group portrait of employees of the Jackson Laboratory.
Abstract: The Louviers dynamite works began production in 1908 and provided explosives primarily for mines in the region. The panoramic photograph shows a view of the DuPont Company dynamite works at Louviers, Colorado, including the magazine area, powder line, and overall view.
Abstract: The DuPont Company's Executive Committee established the Experimental Station, a research facility located on the banks of the Brandywine Creek across from DuPont's first black powder works. The panoramic photograph provides an overview of the DuPont Company Experimental Station and Country Club, outside of Wilmington, Delaware. It shows temporary structures and construction for expansion of the Experimental Station.
Dates: circa 1947
Abstract: The DuPont Company purchased a site near City Point, Virginia on the James River in 1912 in order to build a dynamite plant located closer to the southern market. The panoramic photographs show exteriors of the plant, views of the workers' housing, the town (including the African American section), and a photograph of the Hopewell China Corporation, a post-war reuse of one of the facilities.
Dates: 1918-circa 1920
Abstract: In 1902, DuPont took control of Laflin & Rand, including the Haskell Works. Infallible and Ballistite powders were manufactured there. The works played an important role in smokeless powder production during World War I. The panoramic photographs depict views of the Du Pont Company's smokeless powder works in Haskell, New Jersey and the workers village nearby.
Dates: circa 1920
E.I. du Pont de Nemours & Co., Inc. Jackson and Technical laboratories at the Dye Works panoramic photographs
Abstract: The Jackson Laboratory and the Technical Laboratory was established by E.I. du Pont de Nemours & Company at its Deepwater, New Jersey, in 1917 and 1920 respectively to manufacture and research dyes. This collection consists of two panoramic photographs of exteriors of the laboratories.
Abstract: The Neoprene B plant was located at DuPont's Deepwater Point, New Jersey site, which was later named the Chambers Works. This collection consists of three panoramic photographs showing the construction of the Neoprene B plant.
Abstract: The War Department of the United States Government contracted with the DuPont Company to build and run a smokeless powder plant called the Old Hickory plant on the Cumberland River near Nashville, Tennessee during World War I. These panoramic photographs show overall views of DuPont Company's Old Hickory smokeless powder plant, also views of exterior and interior details.
Abstract: In 1904 the DuPont Company purchased the International Smokeless Powder and Chemical Company, which was then producing smokeless powder and nitrocellulose products in their plant in Parlin, New Jersey. This collection consists of seven panormaic photographs that show views of the Parlin, New Jersey plant, including views of production facilities and worker housing.
Dates: 1918; 1925
Abstract: The DuPont Company acquired a site on the York River in Virginia on which they planned to build a dynamite plant. The U.S. Government took over the property in 1918 and got the DuPont Company to build a shell loading plant instead. These three panoramic photographs show overall views of the shell loading plant at Penniman, Virginia during World War I.
Abstract: In 1902 the DuPont Company acquired the Smith Electric Fuze Company and some other properties in the Pompton Lakes, New Jersey area. DuPont continued the manufacture of fuses, blasting caps, and other blasting supplies at the plant, adding a shell plant and other facilities. One panoramic photograph shows an overview of the DuPont Company plant at Pompton Lakes, New Jersey, 1918, and the other is a group portrait of staff, August 25, 1943.
Dates: 1918; 1943
Abstract: In 1918, the company opened an additional plant in Racine, Wisconsin to increase the production of smokeless powder to meet the growing demand in order to support the war effort. This panoramic photograph shows a group of engineers outside of the plant.
Dates: circa 1914-1918
Abstract: E.I. du Pont de Nemours & Company Repauno Works manufactured high explosive dynamite. The company began as the Repauno Chemical Company on June 7, 1880, by Lammot du Pont (1831-1884), a chemist working for the family business, E.I. du Pont de Nemours & Company, a chemical company which originally produced gunpowder. The panoramic photographs show two views of the dynamite works and workers village at the DuPont Company's Repauno Works.
Dates: 1919; 1926
Abstract: In 1927 the DuPont Company constructed a plant to manufacture viscose rayon. This panoramic photograph depicts an overview of the DuPont Company's Spruance Plant in Richmond, Virginia.
Dates: 1935 March 12
Abstract: The Foreign Relations Department of E.I. du Pont de Nemours & Company was first organized on August 1, 1930, for the purpose of improving the exchange of scientific and technical information with DuPont's British counterpart, Imperial Chemical Industries, Ltd. These materials consist of records of the International Finance Division within DuPont International, and more particularly the Division's Vital Records Program and Nylon de Mexico reorganization.
Abstract: E.I. du Pont de Nemours & Company was organized in Paris in 1801 by Pierre Samuel du Pont de Nemours and his son Eleuthère Irénée du Pont. Included here are records of the firm collected by P.S. du Pont and separated from the main body of company records.
Dates: 1782-1902, bulk 1802-1830
E.I. du Pont de Nemours & Company Cellophane Division cellophane packaging photographs and sales materials
Abstract: E.I. du Pont de Nemours & Company is a chemical company more commonly referred to as the DuPont company. While cellophane was invented in Switzerland, it was not until DuPont acquired the patent in 1923 that allowed DuPont scientist William Hale Charch (1898-1958) to improve it so that it was impervious to water vapor. DuPont produced cellophane until 1986. This collection consists of undated photographs, one saleman's album, and one poster that all relate to cellophane packaging.
Dates: circa 1957
Abstract: DuPont Company's Chestnut Run Laboratories first laboratory was the Textile Research Laboratory whose purpose was to test the effects of normal wear and tear on DuPont's line of synthetic fibers and fabrics, it opened in 1954 near Wilmington, Delaware. The Chestnut Run Technical Library is a branch of the DuPont Technical Libraries, which began in 1958. This collection consists of files related to the work of the scientists at the laboratory; their speeches, research articles, and some periodicals and scrapbooks related to textile design. There are also materials related to human resources polices and procedures; documents from a program about the future growth of the company; and a library subject file.
Abstract: A collection of random publications, photographs, and objects associated with DuPont's Engineering Physics Laboratory. A number of the items appear to be associated with Paul M. Tannenbaum, once Senior Research Physicist at the Laboratory.
Abstract: The DuPont Experimental Station is a large industrial research facility founded in 1903; focused on chemistry research. An aerial view of the DuPont Company's Experimental Station taken in 1987.
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) the company began with the production of gunpowder. Established in 1903, the Experimental Station is a research facility located on the banks of the Brandywine Creek across from DuPont's first black powder works. This collection contains three documentary photographs of both sides of the lower gates of the DuPont Company Experimental Station.
Abstract: E.I. du Pont de Nemours & Company was established in 1802 by Pierre Samuel du Pont de Nemours (1739-1817) and his son Éleuthère Irénée du Pont (1771-1834). The du Ponts purchased a mill site on the banks of the Brandywine River just North of Wilmington, Delaware. The pulp keg mill, after the powder yards closed, was used for record storage by the DuPont Company. (Currently, it is a Hagley Museum and Library property, the Hall of Records.) In 1903, the DuPont Company's Executive Committee established the Experimental Station, a research facility located on the banks of the Brandywine Creek across from the du Pont's first black powder works. This collection consists of photographs and negatives from the DuPont Company's Secretary's Department showing the Hall of Records at various times and one aerial view of the Experimental Station.
Dates: circa 1906-1975
E.I. du Pont de Nemours & Company, Inc., Carney's Point Works and workers housing panoramic photographs
Abstract: The DuPont Company purchased the land for a smokeless powder plant at Carney's Point, New Jersey (across the Delaware River from Wilmington, Delaware) in 1890. In 1892 it produced its first guncotton, and then the first smokeless powder. This collection consists of twenty panoramic photographs of Carney's Point smokeless powder plant, including exteriors of various buildings and groups of workers.
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. Lavoisier Library is the library at the DuPont Company's Experimental Station, a large industrial research facility focused on innovative advancements in chemistry located in Wilmington, Delaware. The records in this collection consists of files assembled to document various aspects of the company's history, its policies and products, and the writings and speeches of executives and researchers.
Abstract: The E. I du Pont de Nemours & Company minute books document an important era in the history of the company from just before the turn of the twentieth century through the 1930s. The DuPont Company in this time went through many changes in structure under the leadership of cousins T. Coleman du Pont, Alfred I. du Pont, and Pierre S. du Pont.
Abstract: The E.I. du Pont de Nemours Niagara Plant produces a number of specialty chemicals, such as polymer acetates, sodium cyanide, and methyl chloride; the plant was purchased by the DuPont Company in 1930. This small collection of Niagara Plant historical files consists of plant histories, photographs, biographical information on personnel, drawings of plant buildings, and some artifacts.
E.I. du Pont de Nemours & Company, Organic Chemicals Department, Dyestuffs Division manuals and notebooks
Abstract: E.I. du Pont de Nemours & Company was a chemical company and began a research program in dyes in 1916. By the late 1920s the DuPont Company was one of the four major U.S. dye producers and controlled twenty-five percent of the market. The records consist of notebooks and procedures on dyes, which describe the colors, uses, applications, tests, and fastness and dying properties for dyes manufactured by DuPont and its competitors.
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 organization charts show the evolution of DuPont's corporate structure, including the period 1919 to 1921, when the decentralized, multi-divisional form was adopted, and the diversification and restructuring of the 1980s. As the charts also show the names of company officials above supervisory rank, they may also be used to follow individual career paths.
Abstract: E. I. du Pont de Nemours & Company's Pontchartrain Works in LaPlace, Louisiana, was a major producer of Neoprene and other elastomers in the latter half of the twentieth century. The records consist of manuals, technical reports, brochures, bulletins, and other material from Du Pont's Louisville Works, Montague Works, and its Maydown Works located in the United Kingdom. Most documents were created by the company's Elastomer Chemicals Department and deal with the manufacture of various synthetic rubbers in the 1950s and 1960s.
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 and his son Eleuthère Irénée du Pont the company began with the production of gunpowder. The postcard consists of a view of the DuPont Powder Yards in Wilmington, Delaware.
Dates: circa 1913
Abstract: E.I. du Pont de Nemours & Company’s R. & H. Chemicals Department manufactured and sold peroxides, cyanide of sodium, formaldehyde, trychloretheline, tin oxide, and polyvinyl alcohol. The department was formed in 1933 as a result of the 1930 acquisition of the Roessler & Hasslacher Chemical Company, which operated a plant in Niagara Falls, New York. The records primarily consist of reports on experimentations with various insecticides, pesticides, preservatives, and other forms of pest and disease-control applied to the farming and agricultural industries.
Abstract: E.I. du Pont de Nemours & Company Repauno Works manufactured high explosive dynamite. The company began as the Repauno Chemical Company on June 7, 1880 founded by Lammot du Pont (1831-1884). Lammot du Pont was a chemist working for the family business, E.I. du Pont de Nemours & Company, a chemical company which originally produced gunpowder. This collection consists of material for the 100th anniversary of the E.I. du Pont de Nemours & Company Repauno Works.
Dates: 1918-1983; Majority of material found within 1965-1983
Abstract: In the twenty-first century, the E.I. du Pont de Nemours & Company, better known as the DuPont Company focused on science with a diverse set of interests and products. It operates in more than ninty countries with corporate headquarters in Wilmington, Delaware, and employs more than 60,000 people worldwide, including 10,000 scientists and engineers. This is a collection of websites owned by or affiliated with the DuPont Company, between 2011 and present. Complete web archive is available at https://archive-it.org/collections/2606.
Abstract: Eileen Gray (1878-1976) is considered one of the most important and influential furniture designers and architects of the early twentieth century, inspiring both modernism and Art Deco movements. She was among the vanguard of the International Style in her use and interpretation of geometric forms and industrially produced materials. This collection is a boxed set of postcard-size reproductions of black and white photographs of houses, rooms, and objects designed by her.
Dates: circa 1992
Abstract: Frederic G. Cooper (1883-1962) was an honorary member of the Society of Illustrators. He worked for New York Edison from 1905 to 1926. These are miniature souvenir posters for the Electrical Exposition and Motor Shows sponsored by the New York Edison Company.
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: Glass negatives of aerial views of 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: 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.
- Audiovisual Collections 669
- Manuscripts and Archives 350
- Published Collections 27
- Advertisements 97
- Railroads 87
- Correspondence 60
- Gunpowder industry 58
- Exhibitions 56
- Chemical industry 52
- Explosives industry 49
- Portraits 37
- Postcards 36
- Aeronautics 35
- Ephemera 34
- Financial statements 34
- Textile industry 34
- Automobile industry and trade 33
- Exhibition buildings 33
- Electronic industries 32
- Group portraits 32
- Steel industry and trade 32
- Photograph albums 30
- Research, Industrial 29
- Panoramic photographs 28
- Wilmington (Del.) 28
- Construction projects 27
- Factories 27
- Railroads -- Rolling stock 26
- Iron industry and trade 24
- Marketing 24
- Testing laboratories 24
- Patents 23
- World War, 1939-1945 23
- Planographic prints 22
- Reports 22
- Textile fibers, Synthetic 22
- Posters 21
- Scrapbooks 21
- Aerial photographs 20
- Coal mines and mining 19
- Industrial design 19
- Ships 19
- Du Pont family -- Homes and haunts 18
- Packaging -- Design 18
- Powder mills 18
- Railroad stations 18
- Steel-works 18
- Weapons industry -- Employees 18
- Chemical plants 17
- Sales promotion 17
- Social history 17
- Blast furnaces 16
- Genealogies 16
- Industrial films 16
- Industrial safety 16
- Iron and steel workers 16
- Minutes 16
- Pennsylvania 16
- Account books 15
- Airplanes 15
- Historic sites 15
- Business and politics 14
- Dyes and dyeing 14
- Finishes and finishing 14
- Gunpowder, Smokeless 14
- Inventors 14
- Papermaking 14
- Television 14
- Trade associations 14
- Computer industry 13
- Gardens 13
- Industrial chemists 13
- Industrial housing 13
- Investments 13
- Oral histories 13
- Philadelphia (Pa.) 13
- World War, 1914-1918 13
- Dwellings 12
- Electric industries 12
- Glass negatives 12
- Industrial buildings 12
- Maps 12
- Steam locomotives 12
- Textile factories 12
- Viewbooks 12
- Anthracite coal industry 11
- Banks and banking 11
- Diaries 11
- Display of merchandise 11
- Household electronics 11
- Hunting 11
- Recreation 11
- Technical drawings 11
- Timetables 11
- Women employees 11
- Biography 10
- Brandywine Creek (Pa. and Del.) 10
- Commerce 10
- Domestic relations 10
- Dynamite 10
- Executives 10
- Interior decoration 10
- Machine shops 10 ∧ less
- English 1037
- French 7
- German 1
- Italian 1
- Spanish; Castilian 1
- E.I. du Pont de Nemours & Company 119
- Unknown 51
- Du Pont family 48
- Vinson, Z. Taylor 28
- Pennsylvania Railroad 26
- RCA Corporation 17
- E.I. du Pont de Nemours & Company. Experimental Station 16
- Dick, John A., 1879-1972 14
- New York World's Fair (1939-1940 : New York, N.Y.) 12
- New York World's Fair (1964-1965 : New York, N.Y.) 11
- Savery, Thomas H., 1837-1910 11
- World’s Columbian Exposition (1893 : Chicago, Ill.) 10
- Du Pont, Pierre S. (Pierre Samuel), 1870-1954 8
- Eleutherian Mills (Greenville, Del. : Estate) 8
- Bethlehem Steel Corporation 7
- Centennial Exhibition (1876 : Philadelphia, Pa.) 7
- E.I. du Pont de Nemours & Company. Chestnut Run Laboratories 7
- E.I. du Pont de Nemours & Company. Textile Fibers Department 7
- Joseph Bancroft & Sons Co 7
- Reading Company 7
- Southeastern Pennsylvania Transportation Authority 7
- Amtrak 6
- Baldwin Locomotive Works 6
- Century of Progress International Exposition (1933-1934 : Chicago, Ill.) 6
- Gentieu, Pierre A., 1842-1930 6
- Greenewalt, Crawford H., 1902-1993 6
- Hagley Museum and Library 6
- International Business Machines Corporation 6
- Jackson Laboratory (E.I. du Pont de Nemours & Company) 6
- Lehigh Valley Railroad Company 6
- Radio Corporation of America 6
- Baltimore and Ohio Railroad Company 5
- Budd Company 5
- Du Pont, Alfred I. (Alfred Irénée), 1864-1935 5
- Du Pont, Eleuthère Irénée, 1771-1834 5
- Du Pont, Irénée, 1876-1963 5
- E.I. du Pont de Nemours & Company. Brandywine Works 5
- E.I. du Pont de Nemours & Company. Carney's Point Works 5
- E.I. du Pont de Nemours & Company. Central Research and Development Department 5
- E.I. du Pont de Nemours & Company. Hagley Yard 5
- E.I. du Pont de Nemours & Company. Pioneering Research Laboratory 5
- General Electric Company 5
- Hagley Museum and Library. Library. Oral History Project Office 5
- Loewy, Raymond, 1893-1986 5
- Louisiana Purchase Exposition (1904 : Saint Louis, Mo.) 5
- Penn Central Transportation Company 5
- Ramsay, William G. (William Gouverneur), 1866 - 1916 5
- Victor Talking Machine Company 5
- American Iron and Steel Institute 4
- American Telephone and Telegraph Company 4
- Bethlehem Steel Company 4
- Brandywine Manufacturers Sunday School 4
- Central Railroad of New Jersey 4
- Du Pont, Richard C. (Richard Chichester), 1911-1943 4
- E.I. du Pont de Nemours & Company. Engineering Department 4
- E.I. du Pont de Nemours & Company. Organic Chemicals Department 4
- E.I. du Pont de Nemours Powder Company 4
- General Motors Corporation 4
- Kwolek, Stephanie, 1923-2014 4
- Lea family 4
- Longwood Gardens (Kennett Square, Pa.) 4
- Lukens Steel Company 4
- National Association of Manufacturers (U.S.) 4
- Philadelphia & Reading Railroad Co 4
- Pusey and Jones Company 4
- Remington Arms Company 4
- Savery, William H., 1865-1949 4
- Sperry Rand (Corporation). Univac Division 4
- University of Delaware 4
- Watson, Robert B. 4
- Aircraft Owners and Pilots Association 3
- All American Engineering Company 3
- American Car and Foundry Company 3
- Avon Products, Inc 3
- Bannerman family 3
- Bannerman's Island Arsenal (Fishkill, N.Y.) 3
- Baughman, James P. 3
- Brandywine Hundred (Del.) 3
- Carothers, Wallace Hume, 1896-1937 3
- Christ Church Christiana Hundred (Greenville, DE) 3
- Christ Church Christiana Hundred Sunday School 3
- Cinecraft Productions, Inc 3
- ConRail 3
- Dallin, J. Victor (John Victor), 1897-1991 3
- David Sarnoff Library 3
- DeMirjian, Charles H., 1925- 3
- Delaware, Lackawanna and Western Railroad Company 3
- Du Pont Motors, Incorporated 3
- Du Pont de Nemours, Pierre Samuel, 1739-1817 3
- Du Pont, Charles I. (Charles Irénée), 1797-1869 3
- Du Pont, Sophie Madeleine, 1810-1888 3
- Du Pont, Victor Marie, 1767-1827 3
- Du Pont, William, 1855-1928 3
- E.I. du Pont de Nemours & Company. Chamber Works 3
- E.I. du Pont de Nemours & Company. Elastomer Chemicals Department 3
- E.I. du Pont de Nemours & Company. Pompton Lakes Works 3
- E.I. du Pont de Nemours & Company. Public Relations Department 3
- E.I. du Pont de Nemours & Company. Repauno Works 3
- Erie City Iron Works 3
- Hanford Engineer Works 3 ∧ less