Union Pacific steam locomotive 4014, “Big Boy,” pulls out of Prescott, Arkansas on a cold fall morning with its excursion train as it heads north on the UP Little Rock Subdivision on November 13, 2019. | Jim Pearson Photography

Union Pacific “Big Boy” 4014 is the largest operating steam locomotive in the world and one of the biggest ever built. The locomotive is seen here in July of 2024 on a publicity tour for the Union Pacific Railroad. Union Pacific Railroad #trains #steamtrain #bigboy #bigboy4014 #trainspotting #unionpacific | Coasterfan2105

We're looking over the recently delivered Conductor's Club Big Boy from Broadway Limited Imports in N Scale. We have UP 4019 on hand which was one of two N Scale Big Boys offered as the 2024 Conductor's Club locomotive. For more information on the Conductor's Club, visit our friends at Broadway Limited Imports, LLC. We'd like to thank our friends at Broadway Limited for sponsoring this product spotlight here on The Steam Channel. | The Steam Channel

A look at Big Boy locomotives #'s 4011, 4012 & 4013. From the Pentrex show "Union Pacific's Big Boy Collection" https://rfd.video/BBCollection | Steam Giants

Worlds largest steam locomotive!! Big Boy 4014 Union Pacific RR | Chopperguy