Series VI consists of special correspondence files from the Office of the Secretary. Most of this material is from the tenure of J. Stewart Huston (1928-1963), but were kept separate from Huston's more extensive regular correspondence files, which are in the Lukens Steel Company records (Accession 0050).

Subseries A Alleghany Ore & Iron Company, dates from 1913 to 1944, with bulk dates from 1939 to 1943. Records include correspondence, income statements, expenses, payrolls, and bills dealing with the management of ore and timber resources, including prospecting.

Subseries B deals with the Atomic Industrial Forum, a trade group for the nuclear industry, from the late 1950s. Lukens hoped to cultivate markets for the specialty steels required in nuclear reactors. Records include Washington Atomic Reports and deal with such subjects as radiation effects and reactor materials.

Subseries C consists of papers dealing with the incorporation of the Lukens Iron and Steel Company in the early 1890s. There are also scattered auditors' reports and cost figures.

Subseries D Lukens Steel Company, consists primarily of five seal books from 1928 to 1972. The seal books are registers of each instance when the corporate seals of Lukens or any of its subsidiaries were used. The subseries also includes some Jacobs-Shupert United States Fire Box Company voting trust certificates from 1917.

Subseries E consists of World War II ration stamp accounts with the National Bank of Chester Valley, from 1943 to 1945.