Developed in 1797 by Scotch-Irish settler John Wallace, Waynesboro was a quiet rural village in Pennsylvania's fertile Cumberland Valley. Until the 1850s, the town's chief distinction was its location astride two main roads, which enabled local farmers and artisans to deliver their goods to bigger markets, such as Baltimore. During the next half-century, the mechanical genius of George Frick, Peter Geiser, the Landis brothers, and other visionary industrial leaders transformed the sleepy village into a major manufacturing center and patented inventions still used worldwide today. Waynesboro's...