This summer, I had the privilege to witness UP 4014, Union Pacific's restored "Big Boy" 4-8-8-4 steam locomotive, ply the rails of the UP mainline once again, this time leading the "... (more)

This summer, I had the privilege to witness UP 4014, Union Pacific's restored "Big Boy" 4-8-8-4 steam locomotive, ply the rails of the UP mainline once again, this time leading the "... (more)

This summer, I had the privilege to witness UP 4014, Union Pacific's restored "Big Boy" 4-8-8-4 steam locomotive, ply the rails of the UP mainline once again, this time leading the "... (more)

Union Pacific Big Boy #4014 (2-8-8-2) makes smoke as it leaves Sharon Springs, Kansas for Denver, Colorado.

This summer, I had the privilege to witness UP 4014, Union Pacific's restored "Big Boy" 4-8-8-4 steam locomotive, ply the rails of the UP mainline once again, this time leading the "... (more)

This summer, I had the privilege to witness UP 4014, Union Pacific's restored "Big Boy" 4-8-8-4 steam locomotive, ply the rails of the UP mainline once again, this time leading the "... (more)

This summer, I had the privilege to witness UP 4014, Union Pacific's restored "Big Boy" 4-8-8-4 steam locomotive, ply the rails of the UP mainline once again, this time leading the "... (more)

"Highball Blaser" was the word on the radio as UP 4014 thundered up the valley hot on the heels of a grain train some 20 minutes prior.

This summer, I had the privilege to witness UP 4014, Union Pacific's restored "Big Boy" 4-8-8-4 steam locomotive, ply the rails of the UP mainline once again, this time leading the "... (more)

This summer, I had the privilege to witness UP 4014, Union Pacific's restored "Big Boy" 4-8-8-4 steam locomotive, ply the rails of the UP mainline once again, this time leading the "... (more)

This summer, I had the privilege to witness UP 4014, Union Pacific's restored "Big Boy" 4-8-8-4 steam locomotive, ply the rails of the UP mainline once again, this time leading the "... (more)

Union Pacific's Big Boy #4014 runs towards Denver, Colorado, where it will stop for a day before finally heading to the home base in Cheyenne, Wyoming.

UP 1507 (GP40-2) sits in the Union Pacific's North Yard as UP Big Boy 4014 backs towards the freight cars that it will take to Cheyenne, Wyoming.

Union Pacific's Big Boy #4014 crosses a bridge in east Denver as it heads for the UP main line which will take the historic train back to Cheyenne, Wyoming.

The sleek shape of the Union Pacific's Big Boy #4014 is evident as the mechanical behemoth races across the plains of Kansas on its way to Denver, Colorado.