In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
The story of the farmers who dreamed of prosperity and lived through ten years of drought, dust, disease and death.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
Schools taught Native Americans to imitate white men in a liberal "civilizing" mission in 1875.
Today one of the most-recognized figures in American literary history, poet Walt Whitman was denounced by critics in his own time.
A daunting story of shipwreck, starvation, mutiny and cannibalism amongst a group left abandoned in the high Arctic.
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.