This stunning film portrait of Yosemite National Park uses the 1851 diary of the first expedition of soldiers into the Native American territory.
The epic battle waged over dinosaur fossils by rival paleontologists in the American West.
How do you manage weapons of mass destruction without being destroyed by them?
Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
The journey of Prince Maximilian, German naturalist, and artist Karl Bodmer, who explored the Mississippi River area from 1832-1834.
The New Deal program CCC put three million young men to work in camps across America.
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.
The most daring and innovative accomplishment at the turn of the 20th century.