Shrouded in steam, the Big Boy is putting on a show in the brisk cold morning air as they get ready to take the turn at Marshall.

Rear drivers, valve gear, and various pipes, fittings, and appliances of UP 4014. The reverser is the long mechanism in the upper right corner of the photo.

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.

Steam, water, and fuel piping underneath 4014's cab. Note the emergency fuel shut-off.

A proud father takes his little son's photo in front of 4014's drivers.

UP 4014's chain-driven, automatic lubricator. This big locomotive eats up a lot of grease!

Getting the trip north started, the massive Big Boy locomotive steams it up as they head north towards the stop in Atlanta. This shows the massive length of the locomotive as the suns light gleams... (more)

UP Sr. Mgr of Heritage Operations, Ed Dickens, smiles as he watches scores of visitors pass by 4014 despite the rain.

A warning sign hangs below a noteworthy plaque placed on the 4014 by Pomona, CA. The photographer may have seen this plaque when he visited the place where UP 4014 was displayed in Pomona back in ... (more)

The beautiful shield and headlight on the front of UP 4014.

Visitors admire the massive drivers, rods, and other appliances that make the UP 4014 operate. It's been so long since a large steam locomotive like this has been across so many states that folks ... (more)

A member of the crew climbs down off the front of UP 4014 with a big crowd of visitors looking on. In front of us are the rear cylinder and piston, and in front of those are the lead drivers and t... (more)

If I'm correct, this is the crosshead wristpin, where the main rod connects to the piston. This is on the rear set of drivers. When I walked up to look at the giant 4014, I could feel the heat of ... (more)

Nearly an hour after advertised UP 4014 backs out of the Marshall yard onto the mainline for its trip to Prescott, Arkansas. The schedule had enough padding which allowed to train to get to Presco... (more)

Beautiful steam piping runs above the 4014's lead set of drivers. The craftsmanship of the machinery on this modern steam locomotive is simply breath-taking!