Dr. Alfred Crosby, author of Epidemic and Peace 1918: America's Forgotten Pandemic.
The first around-the-world air race was sponsored to prove that the airplane had a commercial future.
Engineer James Eads tamed the mighty Mississippi, turning New Orleans into the second largest port in the nation.
Politics, culture, race relations, and technology in a year of change.
The internationally famous carnival of delights in New York was the birthplace of the hot dog and the roller coaster.
When two passenger ships collide off Nantucket in 1909, 1,500 people rely on 26-year-old Jack Binns to operate a new technology - wireless telegraphy - to save them all.
In 1934, American polar explorer Richard Byrd became the first to experience winter in Antarctica's interior.
The dramatic story of the streamliners is one of remarkable achievements and opportunities lost.
During the Great Depression, Americans built the Hoover Dam, one of the greatest engineering works in history.