Left to right: John Fremlin, research physicist, wears a German gas mask; Mr. Sander, air raid precautions instructor, wears an army mask; and Lord Forces and M. Dunne wear civilian type masks, which sell in England for about 60 cents. They?re in a chamber in London testing the masks, jotting down notes as the fumes of the gas swirl about them, on August 27, 1938. (Photo by AP Photo)
