Born on this day in 1813, Zachariah Chandler, a staunch abolitionist and radical Republican, served as Detroit’s mayor and a four-term Michigan senator. On this day in 1887, the Soo Railroad Line, also known as the Iron Horse, reached Sault Ste. Marie, connecting the town year-round. In 1915, after seven years of production, the millionth Ford Model T rolled off the assembly line at the River Rouge plant in Detroit.