" Officially, 5 percent of southern slaves worked in industrial occupations. But the statistic understates the reality. It does not include artisans who worked on plantations making articles for use on that plantation, and thus ignores countless enslaved blacksmiths, masons, cabinetmakers, cordwainers, saddle-makers, plow-wrights, and other craftsmen. "

― , What Hath God Wrought: The Transformation of America, 1815 - 1848