David Sarnoff (1891-1971) was the iconic leader of the Radio Corporation of America (RCA) for most of the company's history. For many years the only Jewish executive in the communications field, Sarnoff was highly influential in the development of radio and television. The focus of the David Sarnoff papers is the original David Sarnoff Collection assembled by Sarnoff to celebrate his career. However, the papers also include the extensive photographic, publicity, and administrative files created by his staff at RCA and a substantial audiovisual component.

The David Sarnoff Research Center (DSRC) in Princeton, New Jersey was the central research organization for the Radio Corporation of America (RCA) from 1942 to 1987. Following GE’s acquisition of RCA in 1986, the DSRC was donated to SRI International as a contract research laboratory. Renamed the Sarnoff Corporation in 1997, it was integrated into SRI in 2011. The records document the pioneering research of its scientists and trace the history of the organization from its establishment into the twenty-first century.

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 D.E. Jones Company, and its successor, Edith N. McConnell, were caterers and confectioners in Wilmington, Delaware. The records consist of recipe books, account books, and ledgers that identify individual and corporate customers, and describe types of food prepared for and purchased by clients, who were generally entertaining guests.

The Chicago Railroad Fair was the first exposition after the Second World War and the last exposition that featured railroads as its theme. It marked the centennial of the arrival of railroads to Chicago and their role in westward expansion. This is a postcard of the narrow gauge Deadwood Central train that carried visitors around the fairground.

Oliver Canby (1716-1754) was a miller on the Brandywine Creek. This collection of deeds and indentures documents the acquisition of mills or mill seats, and other lands near the Brandywine Creek in Wilmington, Delaware by the Canby family. This collection was in the possession and care of the Canby family until it was given to Hagley Museum and Library in 2011 by a descendant of Oliver Canby.

The Delaware and Bound Brook Railroad Company was incorporated in 1874, for the purpose of forming a second railroad route between the cities of New York and Philadelphia. Their records consist primarily of basic corporate documents such as minutes, account books, annual reports to the I.C.C., and agreements.

The Delaware Coach Company was originally incorporated as the Wilmington & Philadelphia Traction Company on June 25, 1910, and operated an electric street railway line from Wilmington, Delaware, to Chester, Pennsylvania, and to Philadelphia. Throughout the early twentieth century, the company purchased stock in and leased numerous electric railway, transportation, and utilities companies in the Wilmington and Chester areas. In 1941, it changed its name to the Delaware Coach Company as trackless trolleys and buses replaced electric streetcars. Included are official documents and correspondence; personnel and financial records; public relations files; land deeds; legislation; labor agreements and contracts; equipment, fare, and route policies; ordinances; minute books, and other miscellaneous material created by Delaware Coach and its predecessor electric streetcar companies.

The Delaware Construction Company was a building company, constructing residential houses in downtown Wilmington, Delaware. It was founded in 1909 as a subsidiary of the National Real Estate Trust Company, which provided loans and financing for the properties. This small collection consists of five blueprints of houses by E. Olney Sherman, dated 1910 for Delaware Construction Co.

Horace Holden Thayer, Jr. (1878-1959) was a naval architect, mechinical engineer, and businessman. Between 1909 and 1914 Thayer worked for the Delaware Construction Company which was a building company, constructing residential homes in downtown Wilmington, Delaware. This collection contains photographs of fifteen homes taken between 1910 and 1914. The images are of exterior views only.

St. Andrew's congregation was founded in 1829 in Wilmington, Delaware. This collection contains two Delaware Engagement Calendars, "Historical Edition 1638-1840" and "Historical Edition 1840-1905" for calendar years 1958 and 1959 respectively.

The Delaware, Lackawanna & Western Railroad was one of the largest and most prosperous anthracite mining and transporting companies in Pennsylvania.Their records consist of minutes of the DL&W and its two direct predecessors.

The Delaware, Lackawanna & Western (DL&W) Railroad was one of the largest and most prosperous anthracite transporting and mining companies in Pennsylvania. This collection consists of dated and undated views of a boiler, breakers, collieries, fan houses, hoist, mule barns, pumps, shafts, steam plant, tunnels and an electric power plant in the anthracite mining areas in Lackawanna and Luzerne Counties of eastern Pennsylvania.

This collection is three photographs of the razing of Delaware Memorial Hospital. When originally founded in 1887, it was called Homeopathic Hospital since that was the branch of medicine that was practiced there. In 1940, it was renamed Memorial Hospital. It continued to serve the public also providing allopathic care until it was razed in 1985.

This item is a map of Delaware Park racetrack area showing property boundaries. Parking areas are identified. Buildings are numerically coded, but there is no corresponding key. William duPont, Jr. and Donald P. Ross designed and built Delaware Park Racetrack. Phillip T. Harris of Media, Pennsylvania was hired as the architectural engineer. The facility opened on June 26, 1937. Although the park closed briefly during the 1980s, over the years, it has expanded to include a full-service casino and other amenities

Pierre S. du Pont incorporated the Delaware School Auxiliary Association in 1919 to finance the construction of new school buildings throughout Delaware. Between 1918 and 1940 he donated $5,000,000 to build some 120 schools. This collection contains photographs, almost all exterior, of 114 public elementary and secondary schools in Delaware.

Aerial view showing crowded fairgrounds. The Delaware State Fair began as the Kent and Sussex County Fair in 1920, and is now known as the Delaware State Fair. 1928 was the last year the Delaware state fair was held at the Elsmere site.

Miscellaneous records including information about educational facilities in Delaware.

Documents related to the Delaware State Trapshooting Championship, held at various locations throughout state, mainly Wilmington Trapshooting Association in Newark, Delaware and Silver Lake Sportsman's Association in Magnolia, Delaware. Also included are programs from the Grand American Trapshooting Tournament.

Orlando Wootten (1909-1997) was the photographer for the Salisbury (Maryland) Daily Times and Wicomico Historical Society. Collection consists of documentary views of three flour and feeds mills from the Delmarva area

Delaware Power & Light Company had its beginnings in the 1880s as a number of small power companies sprang up to provide electric service to the Delmarva Peninsula. These 1926 images document the construction of gas towers and substations at the Christiana and Brandywine power plants in the Wilmington, Delaware.

A booklet produced by the American Iron and Steel Institute's Committee of Steel Plate Producers in the 1960s to illustrate imaginative and attractive designs in constructing community water-storage structures with steel.

By the time this manuscript was written in the late eighteenth century, the inclusion of fireworks at celebrations across Europe had been well-established for centuries. In the second half of the eighteenth century, commercial firework displays in particular rose in popularity among audiences across the social spectrum. This collection is comprised of a single manuscript volume with contemporary binding, quarter leather, with marbled paper over boards, all edges speckled in red, and silk endbands. Produced in England circa 1780, the volume consists of 13 leaves containing ink drawings of designs for artificial fireworks.

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.

The Disposor Corporation was the sales agent for the General Fan Corporation of New York City in the 1930s. This collection consists of fourteen photographs of the General Fan Corporation's various mechanical products (ventilation and cooling units) on display at exhibits or installed in businesses, including a ship and restaurants. The album was put together by the Disposor Corporation for sales purposes.

Victor Herbert (1859-1924) was a composer, conductor and cellist. This item is sheet music of the Dodge Brothers March which was composed in honor of Horace E. Dodge (1868-1920).

Domenico Mortellito (1906-1994) was a designer, muralist, and sculptor noted for working in plastics and other synthetic materials. The majority of the materials in this small collection deal with the design and execution of the DuPont Pavilion at the second New York World's Fair in 1964-1965, including correspondence, studies, drawings, and photos of the take-apart model of the original design.

A match cover or a matchbook cover is a thin piece of cardboard that is folded around a set of match sticks. Chemist, John Walker (1781-1859) invented the match stick in 1827. Joshua Pusey (1842-1906?), an inventor and attorney patented matchbook covers in 1892. Within a short time hotels, restaurants, airlines, and all kinds of stores began advertising using matchbook covers. This is a small collection of matchbook covers consists advertising hotels, restaurants, banks, elections, products, and organizations. Most of the matchbook covers are from Texas and New Mexico with a few coming from other states.

Donald Hoke (1951-) and Carolyn Hoke (1951-) are co-owners of Vintage Steam Products, LLC, which manufactures and sells restoration materials for Stanley steam vehicles in Texas. Don Hoke created the Virtual Steam Car Museum, Inc. in 2011. Sparked by eight years at the Milwaukee Public Museum curating the Dietz Collection, he started collecting typewriter ephemera privately and discovered eBay in 1995. A typewriter is a mechanical or electromechanical machine for producing written characters using a key to strike an inked ribbon to transfer ink or carbon onto paper. This collection of typewriter advertising and ephemera offers great insight into the technological development of the typewriter through its beginnings in the 1870s until its eventual dissolution in the 1990s. The plethora of advertising ephemera helps frame the typewriter historically and sociologically, offering insight into the careers of typists and the migration of the typewriter from the office into the home. Trends in advertising and industrial design through the twentieth century are also represented in this collection and will offer ample evidence of these evolutions to researchers.

Donald Fell Carpenter (1899-1985) was general manager of the Film Department at the DuPont Company. He graduated from the Massachusetts Institute of Technology (MIT) with a degree in engineering in 1922. Between 1927 and 1933 he held increasingly important managerial positions with the DuPont Viscoloid Company, and between 1933 and 1948 with the Remington Arms Company. In 1947 to 1948 he was a member of the Industrial Advisory Group to the U.S. Atomic Energy Commission. Broadly speaking, the materials in this small collection of his papers cover Carpenter's entire career, from his senior thesis at MIT (the design for an addition to his father's tinsmithing shop) to his involvement with political and civic affairs during his retirement.

Donald Fell Carpenter (1899-1985) was General Manager of the Film Department at the DuPont Company. The collection consists of photographs, newspaper clippings, pamphlets and a few letters relating to Donald Carpenter's personal life and career.

Donald Robert Hull (1911-1995) was a longtime employee at the DuPont Company mainly working with nylon and textile fibers. The collection pertains to his work at DuPont and Hull's consulting firm, Fiber Concepts, Inc.

Donald Robert Hull (1911-1995) was a longtime employee at the DuPont Company mainly working with nylon and textile fibers. The collection consists of four scrapbook albums of material from Donald Hull's career with the Du Pont Company.

Donaldson Brown (1885-1965) was an industrialist and business executive with E.I. du Pont de Nemours and the General Motors Corporation. These papers relate to Brown's association with GM, and reflect his concern with financial policy, organization and operation, and employee relations. They are especially concerned with the period of World War II. Files from the 1920s and 1930s describe Brown's effort to relate pricing policies to financial control.

Dowling & Kennedy were railroad contractors. The partnership of Dowling & Kennedy and its predecessor, Reynolds, Dowling & Company, were typical of the many small firms that subcontracted to grade sections of railroad rights of way for large general contractors. This collection contains account books, vouchers, and statements covering the receipt of monies from the general contractor and its expenditure for labor and supplies. There are also timebooks, payrolls, and correspondence.

Edward G. Bradford, II (1848-1928) was a federal judge on the United States District Court for the District of Delaware. He married Eleuthera Paulina du Pont in 1872. This collection consists of photographs of the du Pont family and estate, as well as numerous postcards.

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 an 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.

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), who founded 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 research and manufacturing company more commonly referred to as the DuPont Company. This collection consists of placemats with images of exterior views of eight du Pont family homes.

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.

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.

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.

Alexis I. du Pont (1816-1857) was proprieter of his family business, E.I. du Pont de Nemours & Company, which began in the manufacture of gunpowder in 1802. He was the youngest child of Eleuthère Irénée du Pont (1771-1834), the founder of the DuPont Company. This collection contains thirteen photographic items, mostly portraits of Alexis I. du Pont and other du Pont family members.

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).

DuPont Motors, Inc. was a manufacturing company of luxury automobiles, founded by E. Paul du Pont (1887-1950) in 1919 in Wilmington, Delaware. These photographs show exterior views of the vacant DuPont Motors factory in Moore, Pennsylvania, where briefly (1922-1925) DuPont automobiles were assembled.

DuPont Motors, Inc. was a manufacturing company of luxury automobiles, founded by E. Paul du Pont (1887-1950) in 1919 in Wilmington, Delaware. This collection consists of thirty-eight photographs primarily showing the exteriors of DuPont Motor’s Models A, B, D, and G.

The DuPont Airport was a private flying field located on the west side of Wilmington, Delaware. The miscellaneous records include notices from the Federal Communications Commission and Civil Aeronautics Administration, tower materials, and airport arrival and clearance forms.

The DuPont Airport was a private flying field located on the west side of Wilmington, Delaware. The register gives time of arrival, make of aircraft, name of owner and pilot, origin and destination, and the number of passengers.