The first around-the-world air race was sponsored to prove that the airplane had a commercial future.
The story of the polio crusade pays tribute to a time when Americans banded together to conquer a terrible disease.
During the Great Depression, Americans built the Hoover Dam, one of the greatest engineering works in history.
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.
"The Wizard of Menlo Park," Inventor Thomas Edison, built the first practical light bulb and revolutionized the world.
Brothers Wilbur and Orville Wright built a flying machine that made its first flight in Kitty Hawk, North Carolina in 1903.
The remarkable story of how a railroad was built connecting California to the East.
In 1960, Francis Gary Powers' U-2 spy plane was shot down over the Soviet Union.