Today one of the most-recognized figures in American literary history, poet Walt Whitman was denounced by critics in his own time.
Vivid memories of those trapped in the terrifying temblor of 1906 that killed thousands of Californians.
Native Alaskans, oil company representatives, environmentalists, politicians, and others tell the story of the 800-mile pipeline.
The coal miners' battle for dignity led to the largest armed insurrection since the American Civil War.
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.
When an earthen dam broke without warning, a small city in Pennsylvania was swept away in a wall of water over 30 feet high.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.