Aug. 28—STERLING — The Union Pacific Big Boy Steam Engine No. 4014 will make a whistle stop in Sterling on Friday, Sept. 6. Here are five things to know about its visit: Big Boy is coming through ...

The "4014" is the only operating "Big Boy," the biggest steam engines ever built. Big Boy No. 4014, the world’s largest operating steam locomotive, will make two whistle stops in Colorado at the end ...

OROVILLE — A legend from the past will be rolling into town Thursday when the Union Pacific Big Boy No. 4014 steam locomotive makes a whistle stop at the old Oroville Depot. The world’s largest ...

Those wishing to see Big Boy No. 4014, the world’s largest operating steam locomotive, will have their chance Wednesday in Greeley. The popular train will be on public display during its whistle stop ...