But in 1919, Edward D. Bullard of San Francisco, California developed the first hard hat, basing it on the Doughboy helmet he wore as a soldier in World War I. The helmet was made of canvas, glue, and ...

Dennis O'Callaghan holding one of the helmets - his father Bill was one of only two men to survive the massacre after the soldiers surrendered on 27 May 1940 Two helmets belonging to World War Two ...

to view the displayed helmets and other equipment used by U.S. soldiers during World War II. The temporary exhibition, set up at the National Museum of the United States Army, titled the ...