The coal miners' battle for dignity led to the largest armed insurrection since the American Civil War.
John Wesley Powell's epic journey into the unknown Grand Canyon was filled with adventure as his team mapped the Colorado River for the first time.
Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
The journey of Prince Maximilian, German naturalist, and artist Karl Bodmer, who explored the Mississippi River area from 1832-1834.
In 1927, the Mississippi River flooded from New Orleans to Illinois, leaving a million people homeless and leading to a major black migration to the North.
The life of the legendary photographer, known best for his black and white images of the wilderness of the American West.