U.S. Army film about the effects of protective hoods in a toxic atmosphere.
The first officially formed regiment of northern black soldiers who fought in the Civil War.
In the summer of 1940, 10,000 children were sent from wartime Britain to the United States.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
Equipment failure, human error and bad luck led to the country's worst nuclear accident in 1979.
Major Walter Reed's discovery in 1900 that mosquitoes spread yellow fever halted an outbreak and led to the disease's eventual eradication.
The U.S. government's response to the Holocaust was slow and fueled by complex social and political factors.
Though first seen only as an expensive luxury, Alexander Graham Bell's telephone soon transformed American life and became a necessity.
After 18 years of struggles, the Golden Gate Bridge opened on May 27, 1937.