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.

Edward B. du Pont (1934-2017) was vice president of the Wilmington Trust Company, served on numerous boards of directors, and was descended from the founders of E.I. du Pont de Nemours & Company, a chemical company more commonly referred to as the DuPont Company. This small collection documents Edward B. du Pont's service on the boards of directors for the DuPont Company, Atlantic Aviation, and the Hagley Museum and Library, as well as the board of trustees for the University of Delaware, primarily through group portraits. His work for the DuPont Company is most heavily represented. The collection is arranged chronologically. The majority of images date from 1977 to 2003.

E.I. du Pont de Nemours & Company is a chemical company more commonly referred to as the DuPont Company, established in 1802. The Secretary’s Offices was raised to departmental rank on June 1, 1947. The Secretary’s Department was merged into the Legal Department on January 1, 1974. The records of the Secretary's Department are arranged in six series: Transcripts of annual stockholders’ meetings; Leases and agreements; Files on deceased board members; Records division; Stock records; Special committee on 150th anniversary.

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.

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.

John McShain (1898-1989) was a Philadelphia and Washington, D.C.,-based building contractor, whose firm, John McShain, Inc., was by 1950 the fiftieth largest construction firm in the United States, with contracts in excess of $100,000,000. John McShain's personal and business papers document his business career, the construction industry, and his investments in hotels, car dealerships, parking garages, transit lines, and racehorses.

The Reading Stove Works manufactured stoves, furnaces, and heaters. The collection includes Board of Directors minutes and sales and financial statements document the history of the company.

Richard E. Heckert (1924-2010) was chairman and CEO of E.I. du Pont de Nemours & Company from 1986 to 1989. His papers consist of his "personal" business files, most of which were generated by his membership on the boards of businesses and non-profit organizations.

The majority of the records for the parent company consist of correspondence, both incoming and outgoing, primarily generated by or for company officers and/or directors.

William Hilles Ward (1892-1961) was a chemist, who specialized in explosives serving in high positions at the E.I. du Pont de Nemours & Company and the Remington Arms Company, Inc. The collection includes press clippings, speeches, photographs of Ward and the DuPont Board of Directors, birth and death certificates for Ward and his wife Sophie Hodges Ward (1894-1968), obituaries and memorials.