Union Pacific Big Boy
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Union Pacific Big Boy: Return of a legend

The world's largest steam locomotive returns to the rails
Published: November 22, 2013
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Through the 1940s and 1950s, Union Pacific's 25 4-8-8-4 Big Boys symbolized powerful, big-time railroading in the wide-open American West. Now, Union Pacific is bringing one of these legendary locomotives, No. 4014, back to steam.

No. 4014 has been on display at the Los Angeles County Fairgrounds for 51 years, but it will leave soon to begin a multi-year restoration that will return it to steam. 

Join us for extensive coverage of a Big Boy on the road to restoration!

And more to come!

Learn more about steam locomotives

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The world's largest steam locomotives received an accidental nickname
By Steve Glischinski

How a steam locomotive works
Fire + water = steam
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