From the late 1800s to the early 1950s, painted wall signs were a major mode of advertisement for both national companies and local businesses across America. Many of these artistic messages, now faded, peeling, and partially covered, still peek out from the storefronts, barns, alleyways, warehouses, theaters, and even stagecoach stops they once decorated. Photographer Jeff Holder and author Cynthia Haas explore this often overlooked art...