At the turn of the twentieth century, it was a belief that fresh air, rest and a nutritional diet was the best way to treat tuberculosis patients. Dr. J. W. Pettit implemented this therapy by establishing the Ottawa Tent Colony in 1904. Antibiotics had not been developed at that time, so the fresh air treatment was the only option. TB patients were kept in canvas tents or open wooden huts outdoors, in freezing winters and blazing hot summers. It might seem odd today, but it worked for those in the early stages of the disease. Here is the amazing story.