Lukens Steel was an extraordinary business that spanned two centuries of American history. The firm rolled the first boiler plate in 1818 and operated the largest rolling mills in America in 1890, 1903, and 1918, Later it worked on the Manhattan Project and built the steel beams for the base of the World Trade Center. The company stayed in the family for 188 years, and they kept the majority of their business papers."The Language of Work" traces the evolution of written forms of communication at Lukens Steel from 1810 to 1925. As standards for iron and steel emerged and industrial processes...