5.9K views · 565 reactions | A look back at the history of Union Pacific's 4-6-6-4 Challengers with some great scenes too! From the Pentrex show "Union Pacific Classic Collectors’ Combo" https://rfd.video/UPCollector | Steam Giants | Facebook
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MTH RailKing O gauge 4-6-6-4 | a Classic Toy Trains review
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With traffic demands rising, the success of the 4-6-6-4 Challenger locomotives would lead to an even bigger, more powerful articulated locomotive. From the Pentrex show "Union Pacific’s Big Boy Combo DVD, Part 1" https://rfd.video/BigBoyCombo1 | Steam Giants
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Documentary on Union Pacific 3985.
Documentary on Union Pacific 3985.
Apr 24, 2019
FANDOM
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Union Pacific Challenger 3985 rolls past the cement plant at Victorville, California. The huge 4-6-6-4 locomotive traveled to Southern California in May, 1994 to celebrate the Union Pacific Railroad Historical Society’s Los Angeles Chapter’s annual convention. From the Pentrex show "UP 3985 Over Cajon" https://rfd.video/3985Cajon | Steam Giants
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