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 ...

The 101st Airborne Division's moniker is prominently on the sides of the helmet. The name comes from their patch, which depicts an eagle used as a mascot since the American Civil War. "Screaming ...

4:1 — The ratio of people who attended church weekly to those who voted in the 1860 election 2.5 — Approximate percentage of the American population that died in the Civil War 7 million ...