BIG BOY #4014 Trainspotting Worlds Largest Steam Locomotive
1:20:41
The Challenger (Big Boy's Not-So-Little Sister)
22:52
Trainspotting Williams Loop , Ca
1:01:38
Union Pacific’s Big Boy Locomotive - World’s Largest and Most Powerful Steam Train
58:16
Behind The Scenes on a Steam Locomotive [4K]
16:23
"Big Boy" 4014 Test Run for onboard PTC on Track 3 without a diesel assistant - 5/22/24
5:34
The Engine more Powerful than a Big Boy? - DM&IR "Yellowstone"
14:26
Western pacific 165 (the only operable WP steam locomotive) and UP 4014
9:04