Dr. Alfred Crosby, author of Epidemic and Peace 1918: America's Forgotten Pandemic.
Engineered by William Barclay Parsons, the 21-mile, four-track route of the New York City Subway was the largest public works project in history.
Begun during the Civil War, the transcontinental railroad employed 20,000 men, mostly immigrants, who built the iron road with their bare hands.
A uniquely impressionistic history of the early years of the Space Race.
Postwar New York City and the global economic order told through the story of the World Trade Center.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
The most daring and innovative accomplishment at the turn of the 20th century.
After 18 years of struggles, the Golden Gate Bridge opened on May 27, 1937.
Robert Noyce's invention of the microchip launched the world into the Information Age.