A U.S. Government film on the effects of botulism toxin on Rhesus monkeys.
The first officially formed regiment of northern black soldiers who fought in the Civil War.
With the clock ticking and the city under fire how many could be saved?
Brothers Wilbur and Orville Wright built a flying machine that made its first flight in Kitty Hawk, North Carolina in 1903.
The staggering death tolls of the Civil War permanently altered the character of the republic and the psyche of the American people.
Two days in 1967 revealed a nation divided over a war that continues to haunt us.
The stories of ordinary people in the tumultuous years after the Civil War, when America struggled to rebuild the Union.
Franklin Roosevelt restored hope after the Great Depression and led the nation during World War II. Part of the award-winning Presidents collection.
Engineered by William Barclay Parsons, the 21-mile, four-track route of the New York City Subway was the largest public works project in history.