Take a look at Big Boy No. 4018 at the Museum of the American Railroad in Frisco, Texas, with Trains correspondent Hayley Enoch and museum President Bob LaPrelle. You'll learn what makes the Lone Star State's lone preserved Big Boy special!For more Big Boy video, check out Big Boy: On the Road to Restoration, a 90-minute DVD showing the history of the largest steam locomotives and the move of No. 4014 from Southern California to Wyoming in 2014.