It was the largest fire in American history: by the time it was all over, more than three million acres had burned and at least 78 firefighters were dead.
They were the first to brave the unknown.
The New Deal program CCC put three million young men to work in camps across America.
The worst epidemic in American history killed over 600,000 Americans during World War I.
Accounting for America's most famous inventor and his role in America's future.
As the star attraction of Buffalo Bill's Wild West Show, Annie Oakley thrilled audiences around the world with her shooting feats. Part of the Wild West collection.
The epic battle waged over dinosaur fossils by rival paleontologists in the American West.
The unusual life of David Vetter, who lived permanently inside a germ-free environment due to severe combined immunodeficiency.