Two A unit FTs are seen with only one B unit as they lead a freight south of Denver. Otto Perry photo, circa 1962, from my collection.

BNSF 9285 (SD70ACe) shoves an empty coal train through downtown Denver, Colorado and past the roller coasters of the Elitch Gardens amusement park.

UP 1826 (SD40N) moves with two other light power units through the North Yard in Denver, Colorado.

As the blue hour settles over Denver, Colorado, on December 7, 2015, Union Pacific GE AC4400CW-CTE No. 5687 sits inside the cavernous main hall of the former Rio Grande backshop at Burnham Shops. ... (more)

The Amtrak Winter Park Express Ski Train runs through the North Yard in Denver at sunrise as it heads towards the Colorado Rocky Mountains.

UP 4404 (SD70M) crosses Sand Creek in Denver, Colorado as it arrives late in the day.

UP 7701 (AC45CCTE) leads a coal train past the Union Pacific's North Yard and the BNSF's Intermodal Facility in Denver, Colorado.

A colorful RTD Light Rail train #271 passes the Elitch Gardens roller coaster located in downtown Denver, Colorado.

NS 4021 (AC44C6M) waits for service as the California Zephyr 5 train backs into Denver's Union Station.

The Rocky Mountaineer's two GP40-3 engine are getting serviced at the Union Pacific yard in Denver, Colorado. They will soon make a test run into the Colorado Rocky Mountains.

UP 1381 (GP40-2) works the North Yard in Denver, Colorado.

UP 1997 (SD40N) holds station in the Union Pacific's North Yard in Denver, Colorado.

The Union Pacific pull a Denver & Rio Grande Western Jordan Spreader through the North Yard in Denver, Colorado, passing the old Colorado and Southern water tank from the steam era days.

An Executive Grinstein BNSF 9727 (SD70MAC) sits in the BNSF engine servicing facility yard waiting for a train.

It was Heritage Day at the BNSF engine servicing facility in Denver, Colorado, as a Cascade Green former Burlington Northern, a Grinstein Executive MAC and a Warbonnet are waiting for service or a... (more)