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"Big Boy," a 1.2 million-pound locomotive, is back in Colorado after being restored to the world’s largest operating steam ...
Union Pacific's Big Boy No. 4014 locomotive train visits and whistle stops at Greeley, Denver, Cheyenne for limited summer 2025 tour with No. 1616 Locomotive. Skip Navigation Share on Facebook ...
Union Pacific’s Big Boy 4014 Will Make Two Whistle-Stops in Colorado During Limited 2025 Excursion. Share. The legendary locomotive will be accompanied by Union Pacific’s New No. 1616 Lincoln ...
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