The remarkable story of how a railroad was built connecting California to the East.
Robert Moses fueled some of the most ambitious -- and controversial -- public works projects ever conceived.
The contradictory history of a dam that became a statement of American power and prestige.
After 18 years of struggles, the Golden Gate Bridge opened on May 27, 1937.
The impact of tuberculosis in America, once the deadliest killer in human history.
During World War II, more than a thousand women signed up to fly with the U.S. military as WASPS.
Though first seen only as an expensive luxury, Alexander Graham Bell's telephone soon transformed American life and became a necessity.
The worst epidemic in American history killed over 600,000 Americans during World War I.