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The world’s largest operating steam locomotive, known as Big Boy No. 4014, is coming back to Colorado this summer with two ...
Union Pacific’s Big Boy 4014 Will Make Two Whistle-Stops in Colorado During Limited 2025 Excursion
Big Boy will be accompanied by Union Pacific’s ... arrives 10:30 a.m. MDT Twenty-five Big Boys were built during World War II, but only eight survived. No. 4014 is the only one of the eight ...
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