The latter half of the 19th century saw the "golden age" of the American cowboy; newly-built railroad lines made it easier to transport cattle from the western plains to the east coast, where they could fetch top dollar. As these photos reveal, a cowboy's life was a hard one, but living freely on America's western frontier nevertheless appealed to thousands of men.
These photos were taken across the American West between the late 1800s and the early 1900s.
P.T. Barnum -- huckster, con man, promoter, entertainer and founder of "The Greatest Show on Earth".
Brothers Wilbur and Orville Wright built a flying machine that made its first flight in Kitty Hawk, North Carolina in 1903.
The story of James Garfield, one of the most extraordinary men ever elected president, and his assassination by a deluded madman.
President Richard Nixon and Henry Kissinger initiated a secret diplomatic breakthrough with Mao Tse-tung that shocked and changed the world.
Murderer, martyr, hero - John Brown's violent crusade against slavery would divide the nation and spark the Civil War.
Clemente was an exceptional baseball player whose career sheds light on larger issues of immigration, civil rights and cultural change.
The Chiricahua Apache medicine man and warrior who refused to accept white man's 'civilization.' Part of The Wild West collection.
During World War II, more than a thousand women signed up to fly with the U.S. military as WASPS.