John Boyd Dunlop, who invented air-filled tires, made his living in his profession.
Veterinary medicine. Doctor Dunlop invented the air-filled tires to replace the solid rubber tires on his son’s tricycle.
HistoryNet.com is brought to you by World History Group, the world's largest publisher of history magazines. HistoryNet.com contains daily features, photo galleries and over 5,000 articles originally published in our various magazines.