Incorporated in 1912, Atlas Powder Company functioned as an independent explosives and chemicals company until 1971, when it was purchased by Imperial Chemical Industries Limited (U.K.) and became its American affiliate under the name ICI Americas, Inc. The collection consists of minutes, reports, and correspondence from Atlas in addition to both predecessor and subsidiary companies.

The correspondence files of Series I cover such subjects as ordnance contracts with Argentina, Brazil, Chile, Cuba, Italy, Russia and Turkey in the pre-World War I years (circa 1906-1913), general business correspondence and memoranda, sales letters, promotion notices, proposals and inquiries, etc. Correspondence regarding Bethlehem Steel's patent infringement suits with Midland Steel and Niles-Bement-Pond Company (1905-1909) are included. Also covered is the construction of an oil refinery in Argentina and the ore mines in Cuba, Puerto Rico, New York and New Jersey.

These topics generated large amounts of correspondence with a narrow focus. This Johnston filed by subject. In addition, Johnston corresponded with a large number of individuals and companies about a wide range of topics. These letters he filed by correspondent. Some correspondents rated their own individual file, while others, with whom Johnston corresponded infrequently, were grouped together in alphabetical folders. Series I reflects this system. Johnston filed his letters both by subject and by correspondent. Subseries A contains letters filed by correspondent, while Subseries B contains letters filed by subject.

E.I. du Pont de Nemours & Company is a chemical company more commonly referred to as the DuPont Company. It was organized in Paris in 1801 by Pierre Samuel du Pont de Nemours and his son Eleuthère Irénée du Pont and originally produced gunpowder. The collection consists of a binder containing miscellaneous memoranda and tables describing DuPont's manufacture of ordnance between 1914 and 1919.

E.I. du Pont de Nemours & Company is a chemical company more commonly known as the DuPont Company. It was established in 1802 and began by manufacturing gunpowder, later moving into chemical compounds. The company's Engineering Department was initially organized in 1903 as a division of the High Explosives Department, with the purpose of designing and constructing high explosives plants, powder machinery, and extensions to existing plants. This collection of DuPont Engineering records is fragmentary in nature. The surviving records are divided into four series that document a wide range of functions and represent several different time periods in the department’s evolution. The series are: Engineering Department history file; Engineering Research Laboratory; Construction Division; and Design Division, Corfam Poromeric Technology.

In the years leading up to the Second World War, the United States government initiated a massive effort to ensure that adequate supplies of essential materials would be readily available should the country's armed forces become actively engaged in military conflict. At the request of the Army Ordnance Department, the DuPont Company participated in these procurement programs by undertaking the design, construction, and operation of plants for the manufacture of military explosives and other chemical products essential to the successful prosecution of the war. The records of the Explosives Department consist of special reports to the Executive Committee, the files of general manager Edward B. Yancey, and the files of powder superintendent Charles E. Seymour.

George Washington Rains (1817-1898) was a United States Army and Confederate Army officer and proprietor in the Washington Iron Works. This war-date memorandum by Rains gives a full look at the successful Confederate crash program to develop reliable sources of munitions under wartime conditions and gives clues to the skills of the person who managed it.

The Henry family were armsmakers who operated a family gun manufactory in eastern Pennsylvania for five generations. The records of the Henry family document the line leading from the first William to Granville, with some records of William, III. The main body of records deals with the operation of the Boulton Gun Works, its predecessor operation at Nazareth and the associated gun shop and store in Philadelphia.

The Indiana Ordnance Works was built by the DuPont Company for the U.S. Government beginning in 1940. It manufactured military explosives, propellants, and smokeless powder. This collection consists of photographs of the Ballistics Lab of the Indiana Ordnance Works.

The Indiana Ordnance Works was built by the DuPont Company for the U.S. Government beginning in 1940. It manufactured military explosives, propellants, and smokeless powder. The panoramic photographs show overviews of the Indiana Ordnance Works facilities, Charlestown, Indiana.

Louis Labadie "L.L." Driggs (1868-1942) was a weapons manufacturer, who, along with his brother, U.S. Navy Commander William Hale "W.H." Driggs (1847-1908), and fellow Navy officer Samuel Seabury (?-1902) founded Driggs-Seabury Ordnance Company in 1897. This item is a typewritten speech given by L.L. Driggs, likely to the New York Yacht Club, promoting a semi-automatic gun invented by W.H. Driggs.

The Midvale Steel Company manufactured steel parts and was known for casting, forging, and machining high-quality steels, including alloy steels, and precision steel products for a wide array of industries. Their primary business came from work related to railroad and ordnance manufacturing. This small collection consists of five reels of film that document operations at the Midvale Steel Plant in the Nicetown section of Philadelphia. While the reels are not dated, they are believed to be from 1919. The films document the various stages of production at the plant with a focus on the precision steel making processes for which Midvale was known.

The Midvale Steel Company manufactured steel parts for the railroad industry and the armaments industry. The company was known for casting, forging, and machining high-quality steels, including alloy steels. This album contains photographs showing exteriors and interiors of Midvale Steel facilities in the Nicetown area of Germantown.

Wallis Gartside Hines (1919-2014) was a chemical engineer employed at the Kankakee Ordnance Works from 1942 to 1943, a war plant of E.I. du Pont de Nemours & Company located south of Joliet, Illinois. His notes describe the steps to be followed in the manufacture and refining of sodium and lead azide and for the laboratory analysis necessary for quality control.