According to Wikipedia, Sheffield was one of the many early townships settled in 1859. The town was named by Edward Curr after his home town in South Yorkshire, England.
The area grew slowly and the commencement of the Mersey-Forth Power Development Scheme in 1963 saw the town grow dramatically. The completion of the power scheme—seven dams and seven power stations—in 1973 saw the town's population decline. Sheffield's revival as the Town of Murals began as a bid by a small group of residents determined to save their town.
The first town mural was painted in Sheffield in December 1986. Since then over 60 murals depicting the area's rich history and beautiful natural scenery have been painted on walls throughout the town and buildings along the roadside. The murals attract an estimated 200,000 people to the town annually.