the National Safety Device Company in 1914 to market it. He was able to sell his invention around the country, sometimes using the tactic of having a hired white actor take credit rather than revealing himself as its inventor. For demonstrations of the device, he sometimes adopted the disguise of "Big Chief Mason", a purported full-blooded Indian from the Walpole Island Indian Reserve in Canada. He would demonstrate the device by building a noxious fire fueled by tar, sulfur, formaldehyde and manure inside an enclosed tent. Disguised as Big Chief Mason, he would enter the tent full of black smoke, and would remain there for 20 minutes before emerging unharmed. A successful demonstration was also given by the National Safety Device of Cleveland, Ohio. A representative of the company, Mr. Mason, entered a poisonous building with Morgan's hood on his head and remained in that environment for twenty minutes. The test was satisfactory according to Chief Stickle of the Cleveland Fire Department, who said that the device was much cheaper and simpler than the oxygen mask used during that time. Following the demonstration Chief Stickle recommended the purchase of several hoods for the fire department. Mr. Mason continued to make numerous demonstrations at Ravenna, Youngstown, Canton, and other neighboring cities where the device was proclaimed a success. The purchase of Morgan's smoke helmet was not limited within the boundaries of fire departments in northeast Ohio. Many large cities throughout the United States had Morgan's smoke helmet in their fire departments, hospitals, asylums, and ammonia factories, and were using them satisfactorily. His safety hood device was simple and effective, whereas the other devices in use at the time were generally difficult to put on, excessively complex, unreliable, or ineffective. It was patented and awarded a gold medal two years later by the International Association of Fire Chiefs. Morgan's safety hood was used to save many lives during the period of its use. By World War I, his breathing device was refined to carry its own air supply, making it a gas mask. However, upon their entry into the First World War, the United States Army adopted the British Small Box Respirator and French M2 Respirator as their standard anti-gas equipment, the former invented by Newfoundlander Cluny MacPherson. He also developed later models that incorporated an airbag that could hold about 15 minutes of fresh air. His invention became known nationally when