To the farmer, the invention of the tractor was almost as important as the invention of the reaper. It was Cyrus Hall McCormick’s reaper, introduced in 1831, that initiated the power farming era, when mechanisms became a substitute for physical strength and an individual could accomplish more in a day than several men could have previously. The tractor, however, did not suddenly burst on the scene as the reaper did. As they used to say about things that took time to develop, the tractor was “slow a-bornin’.”