Augustus Smith (1868-1932) was a civil engineer and contractor. He held several patents for coaling machinery, such as hoists. These photographs show construction progress and completed buildings, bridges, and coaling stations. There are images of projects Smith worked on or contributed to either as a contractor or engineer. The materials are arranged by company name: Augustus Smith & Co., Bergen Point Iron Works, and Groton Bridge and Manufacturing Co.

Photographs related to Bethlehem Fabrication include a small quantity of plant views. There are more photographs showing projects: bridges (Chesapeake Bay, George Washington, Golden Gate, Niagara Suspension Bridge, Oakland Bay), buildings (including the John Hancocok in Boston, the Hoover Library at Stanford University, and the U.S. Courthouse and Municipal Auditorium in Buffalo, the Hall of Justice in San Francisco) and dams (Bonneville, Boulder, Grand Coulee) and the Ferris wheel at the World's Columbian Exposition in 1893.

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 Metallurgical Laboratories, Inc. (METLAB). These records 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.

The Lukens Steel Company was a medium-sized, non-integrated steel company and one of the top three producers of steel plates in the United States. Lukens operated continuously at its Coatesville, Pennsylvania, site since 1810 and was one of the few successful survivors of the many nineteenth-century iron works that once dotted southeastern Pennsylvania. This collection of Lukens Steel Company records consists of corporate records, mostly from the Secretary's Office. The records are comprised of seven series: Shareholders' meeting agendas; Stockholder lists; Proxies for annual meetings; Board and committee meeting agendas; Financial statements; Secretary's correspondence; and Counsel's correspondence.

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.

McClintic-Marshall made structural steel which was used in the building and bridge trades. McClintic-Marshall Construction Company became a Bethlehem Steel Corporation subsidiary in 1931. There are illustrated trade catalogs and booklets, and an album documenting the relocation of a Pennsylvania Railroad (PRR) bridge.

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.

The Phoenix Steel Company began in the late eighteenth century as a manufacturer of cut nails. It later became a major producer of railroad rails and iron and steel structural members. Their records include minutes (1856-1929); stock ledgers; brief of title papers and property maps; legal and financial correspondence and tax papers; account books; and a works diary.