The Sierra #3 served in freight, passenger and helper service as an additional locomotive in heavier loaded trains until 1932 ...

This fall one of the largest and most historic steam engines in the world will speed through the Sooner State as part of a tour across America. Union Pacific No. 4014, better known as "Big Boy ...

Of the thousands of steam engines that were manufactured, few were designed to provide the raw power these behemoths of engineering used to push and pull.

Big Boy No. 4014 - the world's largest steam engine train - is set to make a return to Slat Lake City in 2024.Authorities of Union Pacific announced that Big B ...

That said, it's still impressive that the Big Boy 4014, a locomotive delivered by Union Pacific Railroad in December of 1941, still holds distinction in the Guinness Book of World Records for the ...

Only 25 of these trains were ever built, and they are the largest steam engines in the world, Union Pacific said. Big Boy No. 4014 was retired in December 1961, having traveled 1,031,205 miles in ...