The plow was demonstrated during testing in 1831, and patented by Cyrus in 1834. It was then that Cyrus Hall McCormick, the inventor from Virginia, completed work on his horse-drawn plow. The roots of International Harvester go back to the distant 1830s.
Some INTERNATIONAL Harvester IH, Farmall Tractor Service Manuals PDF are above the page - 274, Super A, Farmall A AV, Farmall Cube.
