Alexis Irénée du Pont (1843-1904) was a businessman and non-practicing physician who resided in both Louisville, Kentucky, and Wilmington, Delaware. The ledger documents his various financial and business accounts from October 1893 until November 1904, just before his death.

Alfred Hermann Sommer (1909-2003) was a physical chemist who specialized in photoemission research and development. After fleeing from the German Nazi regime and working in London, he immigrated with his family to the United States in 1953. He took a job with the Radio Corporation of America (RCA) at its David Sarnoff Laboratory in Princeton, New Jersey, where he worked until 1974. The collection consists of several of Sommer's articles, publications, and patents.

Alfred Irénée du Pont (1864-1935) was the eldest son of E.I. du Pont (1829-1877). He joined the family gunpowder firm in 1884. This item is portrait of Alfred I. du Pont, dated September 1881.

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.

All American Engineering Company was an aeronautical engineering and research firm which was incorporated on October 31, 1952. The company was originally a division of All American Aviation, Inc. This small collection of photographs depicts air pick-up testing, airplanes, equipment, and personnel.

All American Engineering Company was an aeronautical engineering and research firm which was incorporated on October 31, 1952. The company was originally a division of All American Aviation, Inc. This collection consists primarily of films. There is a small amount of photographs which corresponds directly to the film material. The collection is organized into two series: Films and Photographs, both series are arranged alphabetically. Dating from 1937 to 1984, the Films series documents the company’s innovations in the aviation industry, including pickup and recovery systems, catapults and arresting gear. The photographs document different design projects and tests; most of this research was related to the aviation industry. There are photographs of the facilities at the DuPont Airport on Centre Road near Greenville, Delaware, and the Georgetown, Delaware, test plant. Richard du Pont and other personnel appear in some of the images.

The engineering and research unit of All American Aviation, once the principal feeder airline for the mid-Atlantic region, became the All American Engineering Company in 1953. Their records document the early evolution of All American Aviation, the development of its system of air pick-up service, and its use in postal and military applications.

All American Engineering Company was an aeronautical engineering and research firm that was incorporated on October 31, 1952. The records consist of scrapbooks of newspaper clippings and news releases that document the development, testing, and applications of the company's products.

The Allen D. Cardwell Manufacturing Corporation was a major producer of radio and telecommunications equipment during the twentieth century. Cardwell sold its products to the United States Government, major corporations, and individual consumers. The records contain technical information such as patents and design drawings, as well as a vast array of sales and promotional material from the 1920s.

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 H. Tweddle (1949-) is a retired railroad conductor and avid collector of railroadiana. Railroadiana are artifacts related to current or former railways. This small collection consists of photographs, prints, and note cards related to railroad locomotives. There are photographs of train stations, train cars and engines and one stereoview showing an elevated railway street scene of New York City. There is an album containing many different Amtrak trains, several blotters from the Association of American Railroads, and a few series of note cards. Notably there is a large collection of railroad locomotive trading cards from the Topps Chewing Gum Company series called "Rails and Sails" published in 1954.

A collection amassed by a retired conductor successively employed by the Pennsylvania Railroad, Penn Central, Conrail and Amtrak. It consists partly of company publications and documents collected on the job, and partly of advertisements, timetables, brochures, maps and other railroadiana from many different companies bought from dealers and other collectors. It is particularly useful for the Amtrak manuals relating to things like consumer satisfaction, employee health and safety and equipment maintenance.

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.

The Allied Kid Company was a major manufacturer of kid leather and suede; it was one of the most important specialty leather firms in Wilmington. The records are a miscellaneous collection of Allied Kid Company materials preserved by Alexander Ulin of the Specialty Division of the company in Wilmington. The bulk of the records consist of laboratory and production notebooks giving chemical formulae and instructions for tanning and dyeing batches of hides, including calfskin, goatskin, and suede.

Almon Fuller (1816-1881) was a shoemaker at Wyalusing, Bradford County, Pennsylvania, from 1835 until 1856, when he moved his family to Camptown, Pennsylvania, and became a small farmer. Almon Fuller's daybooks describe the operation of a small shoemaking shop in northeastern Pennsylvania during the 1830s.

Alpheus Hollister (1793-1870) was the proprietor of a sawmill and grist mill and a merchant at Hollisterville, Salem Township, Wayne County, Pennsylvania. The collection consists of two account books for a general store at Hollisterville. The first volume (1848-1849) has been used as a scrapbook by a descendant and is filled with newspaper clippings, mostly sentimental or sensational stories from the 1880s, many from central New York State. The second volume (1860-1867) records typical general store transactions.

Alvin M. Taylor (1876-1973) was a chemist at the General Chemical Company, which specialized in industrial acids. This small collection consists primarily of reprints of articles on sulfuric acid, sulfur, and phenol-recovery. There are also some handwritten notes and correspondence.

Amalgamated Leather Companies, Inc. manufactured black and colored glazed kid and other classes of leather used largely in making shoes in the early to mid-twentieth century. This collection consists of four photographs of employees at various events, and one factory exterior. There is also a color label.

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

Amelia Elizabeth du Pont (1796-1869) was a granddaughter of Pierre Samuel du Pont de Nemours (1739-1817), founder of the E.I. du Pont de Nemours & Company, a chemical research and manufacturing company. She was the eldest child of Victor Marie du Pont (1767-1827) and Gabrielle Josephine de la Fite de Pelleport (1770-1837). The collection is a microfilm of selected papers pertaining to the Pennsylvania property owned by du Pont.

This collection contains two pieces of sheet music: "Volume for Victory," the song of the A.C.F. (American Car and Foundry Company) and "Hamiltonia," song of the Hamilton Watch Company. The American Car and Foundry, Company was founded in 1899 and is still considered a leading American manufacturer of railcars and railcar parts. The Hamilton Watch Company was founded in Lancaster, Pennsylvania in 1892. Among other milestones, it produced the first electric wristwatch in 1957 and the first digital watch in 1970. The Hamilton brand is currently owned and manufactured by the The Swatch Group out of Switzerland.

American Car and Foundry Company is a manufacturer of railroad rolling stock and railcar parts, founded in 1899. In 1901, the company began leasing the facilities of a railroad rolling stock and shipbuilding manufacturer, the Jackson and Sharp Company. The records include photocopies of a history of the Wilmington plant, incorporation papers, and deeds.

American Car and Foundry Company is a manufacturer of railroad rolling stock and railcar parts, founded in 1899. In 1901, the company began leasing the facilities of a railroad rolling stock and shipbuilding manufacturer the Jackson and Sharp Company. From the end of World War One to 1938, the plant built small pleasure boats. These photographs document different activities at the American Car and Foundry Company Jackson and Sharp Plant shipyard in Wilmington, Delaware, during World War II. There are several photos taken on the occasion of the presentation of the Army-Navy "E" award in 1942.

American Car and Foundry Company is a manufacturer of railroad rolling stock and railcar parts, founded in 1899. In the company's early years, American Car and Foundry Company constructed its railcars from wood. Additionally, the company engaged in architectural millwork for buildings. This collection features twenty-five copy photographs of building interiors and exteriors with emphasis on wooden architectural elements.

Decalcomania is the process of transferring pictures or designs from specially prepared paper to glass, ceramic, metal, or other material. The American Decalcomania Company was a major decalcomania company in the early twentieth century in the United States. This collection is an undated loose leaf album showing samples of American Decalcomania Company's commercial decal products.

The records of the American Iron and Steel Institute and its predecessors provide an overview of the American iron and steel industries from their roots in the mid-eighteenth century to the early 1980s. The bulk of the archive consists of the Institute's library. Most of the Institute's own publications, plus a large collection of steel industry annual reports, are cataloged individually and stored in the general Imprints Department stacks.

The American Iron and Steel Institute is a trade association of North American steel producers. The group’s mission includes advocating for public policy, education and innovation for the Iron and Steel Industry. The Institute was established under the leadership of Elbert H. Gary (1846-1927) in 1908, after the Panic of 1907 brought an end to industry-wide consolidations. This collection consists of photographs, research notes, audio, film, and video which document the history of the steel industry. The images cover the entire scope of the steel industry from basic raw materials through the multiple aspects of steelmaking. In addition to images documenting the technical aspects of steel production, there are photographs showing steel in use. These include a variety of industrial and consumer applications and images related to the steel industry and environmental issues. The Albert T. Keller (1869-1940) photographs depict the sites or remains of early ironworks primarily in the mid-Atlantic states and New England states during the 1930s and there are over fifty blast furnace complexes pictured. The Walter C. Woodman (1903-1979) photographs and research notes document the history of iron furnaces and Saugus Iron Works becoming a national historic landmark.

The American Leather Belting Association (ALBA) (now the National Industrial Leather Association) is a trade organization for distributors, fabricators, and manufacturers of leather belting, conveyor belting, and flat power transmission belting. The records of ALBA include meeting minutes of the board of directors from 1937 to 1947 and the association's certificate of incorporation, charter, and by-laws. There are meeting minutes and sales reports from two membership divisions: the Textile Leather Division and the Mechanical Leather Packing Division.

The American Meat Institute (AMI) is a large trade organization for the meat and poultry industry. Founded in 1906 as the American Meat Packers Association in Chicago. During World War II, the AMI stressed the importance of a balance diet in order to keep both civilians and servicemembers strong and healthy. The AMI produced many posters to promote their efforts. This poster shows categories of food along with how many servings is recommended daily.

The National Railroad Passenger Corporation (Amtrak) first began operations on May 1, 1971, following the passage of the Rail Passenger Service Act of 1970. Through the passage of the Railroad Revitalization and Regulatory Reform Act of 1976, Congress authorized the Northeast Corridor Improvement Project (NECIP), a comprehensive program with the goal of improving intercity rail passenger service between Washington, D.C., through New York City, to Boston, the most heavily used passenger train corridor in the United States. Records related to Amtrak's involvement in the NECIP include preliminary and ongoing technical and financial reports, leases and agreements, as well as minutes, agendas, and other working project files.

The National Railroad Passenger Corporation, Amtrak, is a passenger rail service in the United States. This item is a standard twelve-month calendar, with an image on the top portion of each month featuring an Amtrak train.

Andrew Campbell (1821-1890) was an important inventor and manufacturer of printing presses and president of the Campbell Printing Press Company of Brooklyn, New York. His papers include biographical data, correspondence, accounts, patents and records concerning Campbell's inventions.

Andrew Gray Wilson (1844-1905) was well-known among shipbuilders as a preeminent marine engineer and naval architect. This small collection consists of genealogical papers related to the Wilson family, as well as the Driver family and the Merritt family of New York.

The Ann Hillyard in this contract might be Ann Hillyard (1824-1895) who married Richard Watkins (1799-1878), but it is not confirmed. This item is a photostat copy from microfilm of Ann Hillyard indenture to Alan Wood (1800-1881). Wood operated Alan Wood Iron and Steel Company in Conshohocken, Pennsylvania.

Anna J. Schwartz (1915-2012) was an American economist who worked at the National Bureau of Economic Research in New York City. The collection consists of a microfilm copy of an unpublished paper by Schwartz collecting banking statistics for the states of Pennsylvania (1829-1863) and New York (1831-1863), along with an extended essay describing their derivation.

Anna Lea (1849-1927) was the daughter of William Lea (1805-1876) and Jane Scott Lovett (1817-1888). Since the 1770s, the Lea family were among the largest flour mill operators at the Brandywine Falls, north of Wilmington, Delaware. This item is a carte-de-visite photograph album which contains portraits of the Lea and related families, primarily the families of William and Jane Scott Lea’s children (Anna’s siblings, their spouses, nieces, nephews, and friends).

Ansco G. Bruinier, Jr. (1898-1993) was the Technical Advertising Manager for the Dyestuffs Division, Organic Chemicals Department at DuPont in the mid-twentieth century. His papers, which are fragmentary and include both work and personal documents, give insight into World War II and post-war era corporate sales and advertising strategies. Included in his work papers are interoffice correspondence, DuPont departmental organizational charts, and Dyestuffs Division advertisement proofs used in various trade journals representing the cotton, wool, paper, and textiles industries.

Ansco G. Bruinier, Jr. (1898-1993) served as the DuPont Company’s Technical Advertising Manager for its Organic Chemicals Department, Dyestuffs Division at Deepwater, New Jersey, from the 1930s until his retirement in 1963. In 1917, the Jackson Laboratory was established at Deepwater, New Jersey, as a major production facility for dyestuffs. This small collection consists of photographs which document a selection of highlights of Bruinier's career working in the Jackson Laboratory and in the Organic Chemicals Department. The photographs date from 1919 through 1969.

Anthony Morris (1766-1860) was a lawyer and merchant of Philadelphia. Morris was active in the East India trade. Morris's letters are largely concerned with business affairs, administration and sale of lands, and state politics. The letters date from 1800 to 1808.

Anthony Morris (1766-1860) was a lawyer and merchant of Philadelphia. Morris was active in the East India trade. This collection includes two letterbooks and one ledger. The letterbooks are mostly concerned with his business affairs. The letters date from 1787 to 1800. His ledger includes household accounts and records of expenses on voyages to China, India and England. The ledger dates from 1800 to 1806.

The Antietam Woolen Manufacturing Company was a small textile mill in Funkstown, Maryland and operated a domestic store in Hagerstown. The collection represents an incomplete record of a small textile mill company in the early nineteenth century. The records include bills, orders, accounts, inventories and cost estimates. Of particular interest are a series of reports on visits to similar mills operated by Du Pont, Bauduy & Company near Wilmington, Delaware, and by Fisher & Gougher in Germantown, Pennsylvania, with notes on workers, machinery and administrative methods.

Apollo 15 was the fourth manned lunar landing mission. The three-man crew was made up of David R. Scott (1932-), Alfred J. Worden (1932-), and James B. Irwin (1930-1991). The E.I. du Pont de Nemours & Company is a chemical company more commonly referred to as the DuPont company. DuPont materials were used in whole or in part for twenty of the twenty-one layers of the Apollo spacesuits. This is a NASA photograph of James Irwin on moon, August 1, 1971. Attached are strips naming the twenty-one different layers of his space suit.

Archibald Johnston (1864-1948) was a mechanical engineer, who joined the Bethlehem Iron Company in 1889 where he was responsible for the erection of the gun forging and armor plate plant. In 1901 he was elected to the company's Board of Directors, and between 1906 and 1908 was president of the Bethlehem Steel Corporation. The bulk of this collection is concerned with Johnston's work at Bethlehem Steel; a smaller portion consists of strictly personal papers.

Archmere Academy is a private college preparatory school founded in 1932 on the former John J. Raskob (1879-1950) estate in Claymont, Delaware. The collection contains architectual drawings of various floors, bathrooms, and other rooms in the Academy.

The Delaware Antiques Show includes guest speakers and antique dealers to display American antiques and decorative arts. Arminda du Pont (1927-1997) was the founder and the first chairperson of the Delaware Antiques Show. Henry Francis du Pont (1880-1869) was a major collector of American decorative arts, his home, became the Winterthur Museum in 1951. This collection includes one candid photograph of Arminda du Pont (Mrs. E. I. du Pont) and Henry Francis du Pont at the 1967 Delaware Antiques Show.

Arnold M. Kneitel (1923-2012) worked for E.I. du Pont de Nemours & Co., Inc. in sales and corporate information. He worked on sales of mylar when it was introduced in 1954. The collection consists primarily of 35mm slides of displays, advertisements, and presentations on mylar, including its use in electronic equipment and, primarily in magnetic tape for information processing equipment.