Born in Ireland, Tom Connor lived the classic American rags-to-riches story. He witnessed several of the Civil War’s major battles as a newsboy with the 8th Ohio Volunteer Infantry, then spent a decade wondering around the U.S. before ending up in southwest Missouri. Connor soon developed a knack for knowing which tracts of land had rich zinc deposits underneath. He bought thousands of acres of land containing the ore and was a millionaire by age 31.