The worldwide migration by eager gold-seekers turned California into a land of opportunity and fierce competition.
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.
The Klondike Gold Rush in Canada's Yukon Territory saw 100,000 people make the treacherous journey in search of riches.
A biography of the last outlaws of the American Wild West
In the early 1830s, Texas, ruled by Mexico, held 20,000 U.S. settlers and 4,000 Mexican Tejanos, forcing residents to pick sides.
A year in the life of Wyoming cowboys and the ranching families of the American West.
The epic battle waged over dinosaur fossils by rival paleontologists in the American West.
Originally settled as a mail stop, Las Vegas changed from an Old West vacation town, to a mafia haven, to the "Atomic City" and "Sin City."