One of Union Pacific's famous DDA40X giants is on display at the appropriately named Rail Giants Museum. Parked across from Big Boy 4014 for a couple decades now, it's about to get a new stablemat... (more)

A eastbound Union Pacific Van seen just east of Cajon Pass summit on a hazy morning in the pass.

Power-starved UP had to pull everything off the shelves in the spring of 1984 and for a few months Centennials were back in service. Those few months were good ones for Kodak.

UP 6938 on display outside of Jenks Shop.

6936 sits on the west wye at IRM.

The largest operational diesel-electric locomotive in the world, UP 6936, soaks up some sunlight at IRM.

UP 6936 & 6930 team up with a freight extra at the Illinois Railway Museum.

A special visitor from the Union Pacific fits in perfectly with the DD40X #6930 and GTEL #X-18 at the Illinois Railway Museum. Big thanks to the UP for sending the 6936 to the museums 60th Anniver... (more)

Union Pacific Centennial within the Union Pacific Steam Shop at Cheyenne.

Union Pacific's LAX heads up Cajon Pass on its way east. The power for this hot UPS train is the typical "Fast Forty Sandwich" (two DDA40X "Centennials" back to back, with an 8000-class SD40-2H b... (more)

Union Pacific Centennial within the Union Pacific Steam Shop at Cheyenne.

Centennial No. 6905 leads a hot eastbound pig train at Martinez Spur.

Merger mania in Utah's Price Canyon: A trio of Southern Pacific AC4400CWs lead a stopped IPP train at Utah Railway Junction while a Union Pacific officer's special rolls by on the main, headed eas... (more)

At sunrise, a westbound UP pig train with back-to-back Centennials for power winds its way down No. 3 Track, which has a grade of 3.0 percent.