After all, most of the United States replaced steam-powered locomotives in the late 1950s and early 1960s ... a locomotive delivered by Union Pacific Railroad in December of 1941, still holds ...

Instead, this is a steam turbine, nothing like the 1920s and 30s experiments with conventional locomotives, nor even the Union Pacific’s oil-fired condensing turbo-electrics. The new idea here ...

Union Pacific Big Boy Loco Add-On The Union Pacific Railroad's Big Boy 4-8-8-4 steam locomotive is undoubtedly the beast of American railroading history, and this epitome of heavy haulage is now ...

Just days after we wrote about the problem of trying to introduce cleaner locomotives into existing railway's fleets, Union Pacific Railroad has unveiled the first of 60 new environmentally ...