Union Pacific's Big Boys: The complete story from history to restoration covers the who, what, why, and when of the 25 popular 4-8-8-4 steam locomotives. This b

The Union Pacific Railroad "Big Boys" are often credited as having been the largest steam locomotives in the world. Although these 25 steam giants last operated

Once the second-largest steam locomotive builder in the U.S., American Locomotive Company (Alco) produced 75,000 locomotives, among them such famous examples as

History and description of the Union Pacific Railroad.

For nearly half of the nation's history, the steam locomotive was the outstanding symbol for progress and power. It was the literal engine of the Industrial Rev