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| Big Boy! Those two words just about say it all when it comes to giant steam power. The twenty-five 4-8-8-4 behemoths constructed for Union Pacific were the mightiest locomotives of the steam era. These still photos are actual scenes ("frame captures") from the Pentrex Union Pacific BIG BOY Collection. All 25 Big Boys are presented in action on the road, as well as in yards, on the Cheyenne turntable, and in servicing areas. |
| The program begins with this majestic scene in the mountains of Wyoming. |
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A daring photographer climbed to the top of a light tower to capture Big Boy 4011 departing Cheyenne with a westbound freight. |
| BIG BOY got its name from this inscription chalked on the smokebox of engine 4000 as it was about to leave the factory. |
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Big Boys were so powerful that most trains didn't require two engines, but doubleheaders were occasionally run to transfer excess motive power. |
| Shop workers heat a steel tire before mounting it on a driving wheel of engine 4012. |
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Engine 4018 rolls a westbound freight out of Cheyenne Yard as a diesel switcher waits patiently nearby. |
| Gas turbine 56 teams up with a Big Boy to haul tonnage across Wyoming. |
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Engine 4000 rides the turntable in Cheyenne, Wyoming. |
| It's a symphony of smoke, steam, and sound on the roof of a Big Boy running at speed on the main line! |
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In the dead of winter, engine 4006 pulls its train under the Colorado & Southern bridge as it departs Cheyenne westward. |
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Pentrex
P.O. Box 94911
Pasadena, CA 91109-4911 |
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