Inside 'Big Boy': Ride aboard the world's largest steam locomotive

Union Pacific Big Boy, the largest, most powerful steam locomotive in the world, tours the U.S.

World's largest locomotive, Union Pacific's Big Boy, completes epic journey

Sheila Gashumba and Robin Kisti interview highlights

The World's Largest Operating Steam Locomotive — Union Pacific Big Boy No. 4014 Restoration

Could This Abandoned Big Boy No. 4004 Ever Run Again?