Union Pacific's Big Boy

All about one of the largest steam locomotives ever built
RELATED TOPICS: union pacific big boy
Union Pacific's Big Boy locomotive was one of the largest steam locomotives ever built. As UP continues its restoration of No. 4014, Trains is offering the story behind the world's biggest locomotive.

In this digital download, we cover:
  • How the Big Boy locomotive got its name - and why it stuck
  • Big Boy No. 4018 and how it missed its shot at glory
  • How Big Boy stacks up to other heavyweight locomotive contenders

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