A Union Pacific Officer Special gets ready to leave the North Yard in Denver, Colorado and will run into the Colorado Rockies for the Moffat Tunnel.

A Union Pacific Officer Special runs towards the evening sun as it gets ready to enter the Moffat Tunnel at Tolland, Colorado.

A Union Pacific Officer Special runs through Rocky, Colorado as it begins the journey into the Colorado Rocky Mountains on the Moffat Tunnel Sub.

UP 1943 ducks under the PRR Position Light Signals in Lilly, PA.

UP 4404 (SD70M) leaves storm clouds behind as it runs towards Denver, Colorado with an officer's special passenger train.

Storm clouds chase UP 4404 (SD70M) as it leads an officer's train over a long trestle at Peoria, Colorado.

A short passenger special of deadhead equipment is returning to Cheyenne, WY on a summer afternoon. The train has crossed the Loup River in Columbus, NE and is seen at MP 84.5 as it enters a stret... (more)

UP 6454 (AC4400CW) leads a Union Pacific passenger train through the Big Ten Curve on the Moffat Tunnel Sub

UP 6454 (AC4400CW) leads a Union Pacific passenger train out of Tunnel #1 at Plainview, Colorado.

UP 6454 AC4400CW leads an officer's special down the hill into Coal Creek Canyon, Colorado as it heads to Denver.

Storm Light on the Executive Fleet Rolling in on the Kansas & Pacific westbound for Denver.

UP 6454 leads a Salt Lake City to Grand Junction special near the twin tunnels at Kyune, deep in the Price River Canyon.

Special Folks on Board Can’t delay the passenger special, as clean as it can get, Almost perfect. Dusty

Under the fog shrouded coastal hills, southbound Union Pacific SD70M No. 4404 leads a Directors Special along the beach at Emma Wood State Park.

This is a UP passenger special turning on the wye. Photo by Mike Dolenski, from my collection.