In 1919, John Deere entered the harvester business, and International Harvester's reply to their new competition was to purchase P&O Plowing of Canton, Illinois, and the Chattanooga Plowing company of Chattanooga, Tennessee.
År 1919 började John Deere Company tillverka skördemaskiner, och International Harvesters svar på den nya konkurrensen var att köpa P&O Plowing Company i Canton, Illinois och Chattanooga Plowing i Chattanooga, Tennessee.