Crawley motor plough, 1919.
1914-1924
Usher's steam plough of 1849
Moline motor plough, c 1917.
1912-1922
Fowler Motor Plough, by John Fowler & Co. (Leeds) Ltd
1912-1922
model of Asia minor plough
circa 2000-1500 BCE
model of Moroccan plough
1926