This stamp was issued to celebrate the 350th anniversary of America’s commercial shipbuilding industry, which began at Popham Colony, Maine, in 1607. The Popham Colony was located near the present-day Bath Iron Works. The stamp shows the Virginia of Sagadahock, the first American ship used in international trade. This ship was a 50-foot, 30-ton boat – at that time quite an impressive vessel. Built for trade and commerce, the Virginia of Sagadahock marked the start of Maine’s long tradition of shipbuilding.