The evolution of business is inextricably linked with American and international history and identity. The collection exposes technological advances over time, changes in design, architectural advances, societal changes, and business history. Researchers can explore this via catalogs, pamphlets, advertising materials, and ephemera on essential industries that emerged in the nineteenth and early twentieth centuries -- steam engines, railroads, motorized vehicles, agricultural/farm machinery, building and construction, mining, and more.