The Employee Relations Department of the E.I. du Pont de Nemours & Company became a formal entity in 1951, but each industrial department was responsible for its own recruitment and personnel practices. E.I. du Pont de Nemours & Company is a chemical company more commonly referred to as the DuPont company. The records include reports, tables of hourly wages for production workers, benefits for employees, and personnel record cards for early twentieth century employees.

The Leeds & Northrup Company traces its origins to Morris E. Leeds & Company, established by Morris E. Leeds (1869-1952) in 1899 to develop and manufacture precision instruments. Their records consists of minutes from the Development and Executive Committes and the Cooperative Association.

Lukens Steel Company was a medium-sized producer of specialty steel products and one of the top three U.S. producers of steel plate. The Lukens Steel Company records documents all aspects of the business from the early nineteenth century through the 1970s.

The National Industrial Conference Board, later renamed The Conference Board, formed in 1916 as a response by the business community to continued labor unrest and growing public criticism. Their records are an important source for understanding the business community's response to most political and socioeconomic issues. NOTE: The box inventory for this finding aid is not yet online, a full inventory is available onsite in the Reading Room only.

The Phoenix Steel Company began in the late 18th century as a manufacturer of cut nails. It later became a major producer of railroad rails and iron and steel structural members. Claymont Division of the Phoenix Steel Corporation was established in 1960 when the company purchased the Claymont, Delaware steel plant from the Colorado Fuel and Iron Company. This small collection of materials originating from the Claymont steel plant includes miscellaneous plant announcements, catalogs, labor agreements, photographs, company-issued newsletters, and brief historical essays on the Phoenix Steel Corporation and its predecessors.

Virgil Baldwin Day (1915-2003) was a leading figure in American industrial relations from the 1950’s through the end of the 1970’s. Day worked for the General Electric Company from 1947 to 1973 rising to Vice-President of Relations Services in 1961. He was heavily involved in the company's negotiations with labor unions during the “Boulwarism” era at General Electric, and he was instrumental in the company's communications with its workforce. Day also served on a number of national boards and committees that were concerned with labor matters including an appointment to president Richard Nixon’s federal Pay Board in 1971. Day’s high-profile roles made him an in-demand lecturer on topics such as collective bargaining, equal opportunity employment, personnel management, and wage stabilization. The Virgil B. Day papers include correspondence, memos, reports, and clippings that document Day's career at General Electric and his work for the boards and committees he served. The collection also includes many of Day’s speeches which provide insight into the labor issues of his time.