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.

At the turn of the century, under the direction of Charles M. Schwab (1862-1939) and Eugene Grace (1876-1960), Bethlehem Steel Corporation became the second largest American steel company; combined with its other venture, Bethlehem Shipbuilding Corp., it became a leading twentieth century American business. The collection includes a wide range of photography which documents the company’s long history and the breadth of its enterprises from east to west coasts and overseas. It contains eighteenth, nineteenth, and twentieth century industrial and non-industrial images and of management and workers. As a research tool, its use will be as varied and extensive as the corporation itself was during its years as an American industrial giant.

The Bethlehem Steel Corporation was the number two steel producer in the United States between 1916 and 1984. For a time it was also the largest shipbuilding firm in the world. The records of the Bethlehem Steel Corporation (parent company) are a series of fragments, lacking the complete runs of corporate and executive documents that normally comprise a business archive, and largely consist of fragmentary corporate records and files from executive officers.

George A. Richardson (1886-1976) was an engineer with an expertise in metallurgy. He spent his career primarily involved in technical publicity and sales for major steel manufacturers such as the Midvale Steel & Ordnance Company and the Bethlehem Steel Corporation. The papers consist primarily of materials collected by Richardson during the performance of his official duties with the steel companies, in preparing technical lectures and papers, and in teaching courses in metallurgy.

George A. Richardson (1886-1976) was an engineer with an expertise in metallurgy, he spent his career primarily involved in technical publicity and sales for major steel manufacturers such as the Midvale Steel & Ordnance Company and the Bethlehem Steel Corporation. This collection of photographs and negatives was primarily taken by George Atwell Richardson throughout the course of his career while working for Midvale Steel and Ordnance Company and the Bethlehem Steel Corporation. The images document views of steel plants and operations, as well as steel products mostly taken between 1913 and 1929. The collection has been organized into five series: Midvale Steel and Ordnance Company; Cambrian Steel Company; Bethlehem Steel Corporation; Exhibits, and Other steel and coal companies.

James Henry Yeager (1911-1986) was the industrial photographer for the Bethlehem Steel Corporation for thirty years, between 1946 and 1976. The first half of this collection contains photographs taken by James H. Yeager during his tenure at Bethlehem Steel as industrial photographer. The second half the this collection consists of photos and slides taken by Yeager while traveling in Pennsylvania, New York, and New England, and to a lesser degree Washington, DC and the southern United States.

John B. Lovis (1935-2015) was a longtime employee of the Bethlehem Steel Corporation, where he assisted in the design and engineering of the Burns Harbor Plant and held various positions in the company's Corporate Engineering and Planning Department before his retirement as Director, Strategic Planning, in 1995. The collection consists of an unpublished paper prepared in 2007 on the closure of the steel plant in Bethlehem, Pennsylvania and a revision of that paper delivered at Lehigh University in 2014.

The records consist of materials collected by John B. Lovis (1935-2015) for the writing of his book on the history of the Sparrows Point Plant, plus original Bethlehem Steel documents from his tenure in the Corporate Planning Department.

John Oscar Skiles (1895-1960) was a longtime employee of Bethlehem Steel Corporation, where he worked as an analyst in the Metallurgical Department of the company's Sparrows Point, Maryland, plant, beginning in the 1920s until his retirement in 1960. This small collection consists of one folder of materials related to Skiles' employment at Bethlehem Steel.