High on a granite cliff in South Dakota's Black Hills tower the huge carved faces of four American presidents: George Washington, Thomas Jefferson, Abraham Lincoln, and Theodore Roosevelt.
Before radar had been invented a devastating hurricane hit America, surprising residents of the East Coast and killing more than 600 people.
The Last Stand, the final act of General George Custer's larger-than-life career, played out on a grand stage with a spellbound public engrossed in the drama. Part of the Wild West collection.
The Klondike Gold Rush in Canada's Yukon Territory saw 100,000 people make the treacherous journey in search of riches.
William "Buffalo Bill" Cody's legendary exploits helped create the myth of the American West that still endures today.
The American effort to relieve starvation in Soviet Russia in 1921 during the worst natural disaster in Europe in 500 years.
The contradictory history of a dam that became a statement of American power and prestige.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.