2-6-6-6 Allegheny Vs. Union Pacific Big Boy Steam Locomotive!
844steamtrain - 302 Views
Published on 10 Aug 2018 / In Cars and Vehicles
One of the most viewed Big Boy and Allegheny steam train comparisons on youtube! One is the largest, and another is the most powerful. This is a response video to the Trains Magazine article known as "Big Boy."