Denver Rock Island Railroad's GP38-2 (A former Mount Hood Railroad motor) moves a load of oil cans to a yard in Central Denver, Colorado.

Denver Rock Island Railroad's GP38-2 (A former Mount Hood Railroad motor) drops off a couple of oil cans in the yard in Central Denver, Colorado.

BNSF 1798 (SD40-2) crosses the South Platte River as it pulls a cut of cars out of the Denver Yard.

UPY 618 (GP15-1) was built in September of 1979 and can be found still working at the North Yard in Denver, Colorado.

Heavy snows blanket a colorful RTD commuter rail train as it runs pas the BNSF engine servicing facility in Denver, Colorado.

BNSF 4419 (Dash9) runs long hood forward as it heads into the Denver Yard where it will be lashed to an awaiting train.

Here is a wide-angle view of the BNSF engine servicing facility in Denver, Colorado.

Heavy BNSF motors are repositioning in the engine servicing facility as they will soon get order to head to the yard for a train assignment.

Amtrak engine #194 (P42DC) backs the California Zephyr into Union Station in downtown Denver, Colorado. The myriad of catenaries support RTD's Commuter Rail trains that also use the station.

A Union Pacific motor sits at the servicing island at the BNSF engine facility in downtown Denver, Colorado.

BNSF 2718 (GP 39-2) heads to the Denver Yard to start the day sorting cars.

The iconic Union Station in downtown Denver, Colorado is home to the California Zephyr which visits twice a day (the westbound train 5 in the morning and the eastbound train 6 in the evening).

DENVER CO March 10 1980 — Burlington Northern SD9 6221 (sub-lettered for Colorado and Southern) awaits an assignment. EMD built the unit for the C&S as No. 826 in January 1957. It later became C... (more)

BNSF 7911 (ES44DC) heads south on the Joint Line out of Denver, Colorado.

UP 1357 is a 51-year-old GP40-2 that was built in 1972 for the Rio Grande railroad.