Baldwin, Matthias William (1795-1866), was an American inventor and philanthropist. In the early 1830's, he built Old Ironsides, one of the first American-made locomotives. Baldwin designed and built the locomotive with tools he had made especially for the task. He built it in six months. Made of iron and wood, the locomotive weighed 6 tons (5.4 metric tons). It could pull 30 tons (27 metric tons) at a speed of 28 miles (45 kilometers) per hour, an amazing speed at that time.