The records of the American Iron and Steel Institute and its predecessors provide an overview of the American iron and steel industries from their roots in the mid-eighteenth century to the early 1980s. The bulk of the archive consists of the Institute's library. Most of the Institute's own publications, plus a large collection of steel industry annual reports, are cataloged individually and stored in the general Imprints Department stacks.

The American Leather Belting Association (ALBA) (now the National Industrial Leather Association) is a trade organization for distributors, fabricators, and manufacturers of leather belting, conveyor belting, and flat power transmission belting. The records of ALBA include meeting minutes of the board of directors from 1937 to 1947 and the association's certificate of incorporation, charter, and by-laws. There are meeting minutes and sales reports from two membership divisions: the Textile Leather Division and the Mechanical Leather Packing Division.