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 ... National Museum of American History ...

Historians say there is nothing more indicative of how change has come to war than the American military helmet. At the Museum of Veterans and Military History, 53 N. Mt.

These materials have become the standard for virtually all American fire departments ... of the fire fighter's neck. Helmet design really took off after World War II. By 1979, when NFPA issued ...