UP 4014 on the Limon Sub, just west of Clifford, CO, Nov 24, 2019.

It was a beautiful sunny Colorado day as the world's largest steam locomotive, UP 4014 "Big Boy", runs past the trees at Aroya, Colorado. There were hundreds of people chasing this marv... (more)

UP 4014 charges west to Van Buren with Ed Dickens leaning out of the cab.

Like so many others, I was out at Union Station Kansas City Inc. on Sunday night to watch the arrival of Union Pacific's Big Boy. After cutting its train in half, the 4014 backed onto one of Unio... (more)

It is a very cold, 20 degree morning as the UP 4014 is back under steam and being prepared for the trip to Little Rock.

Hard to tell if this is 1959 or 2019. The good thing is we get to witness again what was common on the Union Pacific over 60 years ago.

UP 4014 leads PGINP-05 or “The Great Race Across the Midwest” train across the Platte River just outside of North Platte.

After a day long run from Rawlins, Wyoming, UP PRWLM2-17 finally rolls into Laramie, WY where it will spend the next day before heading back to Cheyenne, completing “The Great Race to Promontory... (more)

The mighty engine seems to be recalling her coal-fired days as she heels into a curve on the former SP route as the grand tour approaches San Antonio. As most everywhere else the whole population... (more)

Tuesday afternoon, I was able to get out for a little bit to catch the Big Boy rolling into Topeka on its jaunt west from KC. These photos were taken from MP 67 on the Kansas Sub, otherwise known ... (more)

This close-up shows where the 4014's eccentric rod connects to the eccentric crank. Such terms all but disappeared from American's engineering vocabulary when diesels knocked steam off the rails.