The worldwide migration by eager gold-seekers turned California into a land of opportunity and fierce competition.
A year in the life of Wyoming cowboys and the ranching families of the American West.
The ultimate frontiersman, Carson inspired popular novels before being associated with the "Long Walk" of the Navajo people.
The New Deal program CCC put three million young men to work in camps across America.
President Theodore Roosevelt was caught in the middle of the first major battle for wilderness preservation in Yosemite National Park.
It was the largest fire in American history: by the time it was all over, more than three million acres had burned and at least 78 firefighters were dead.
The epic battle waged over dinosaur fossils by rival paleontologists in the American West.
During the Great Depression, Americans built the Hoover Dam, one of the greatest engineering works in history.