↑ “Cyrus Hall McCormick”. Wisconsin Historical Society. Truy cập ngày 26 tháng 8 năm 2007. Cyrus H. McCormick (1809-1884) was an industrialist and inventor of the first commercially successful rapist, a horse-drawn machine to harvest wheat. He was born at the family farm (Walnut Grove) in Rockbridge County, Virginia on 15 tháng 2 năm 1809. His father Robert experimented with a design for a mechanical raper from around the time of Cyrus' birth.
