The Klondike Gold Rush in Canada's Yukon Territory saw 100,000 people make the treacherous journey in search of riches.
The worldwide migration by eager gold-seekers turned California into a land of opportunity and fierce competition.
In 1960, Francis Gary Powers' U-2 spy plane was shot down over the Soviet Union.
A uniquely impressionistic history of the early years of the Space Race.
The first around-the-world air race was sponsored to prove that the airplane had a commercial future.
The historic journey of Apollo 8 captivated the world in 1968 -- a bright spot in a year marked by political assassinations, race riots, and the Vietnam War.
Though first seen only as an expensive luxury, Alexander Graham Bell's telephone soon transformed American life and became a necessity.
Brothers Wilbur and Orville Wright built a flying machine that made its first flight in Kitty Hawk, North Carolina in 1903.