The first tin-plated iron can was patented in England in 1810, and introduced in the United States in 1818. Later improvements in metalworking created tin-alloy cans such as this one.  This can held maple syrup harvested and made around 1900, in Greenfield, Massachusetts, located in Franklin County. Then, as now, Franklin County was Massachusetts’ largest producer of maple syrup. The state produces some 44,000 gallons of syrup in an average year; however, that is dwarfed by the production of Vermont, which in 2000, produced an estimated 460,000 gallons. Massachusetts is the fifth largest producer of syrup in the country, after Vermont, New York, Maine, and New Hampshire.