An eleven car eastbound freight is seen leaving Denver Colorado on the Union Pacific line sometime during the 1950s. Otto Perry photo, from my collection.

A BNSF freight runs through Tunnel #4 at Plainview, Colorado after the night's snow frosted the foothills on the Moffat Tunnel Sub.

BNSF 8755 (SD70ACe) leads a colorful consist as it passes under the E-470 highway.

The California Zephyr has just run through Coal Creek Canyon and is heading towards Tunnel #1 at Plainview, Colorado.

Thick frost has coated the pine trees at Tunnel #1 as well as Blue Mountain, and the California Zephyr 5 train rounds the corner at Blue Mountain and heads toward the Colorado Rocky Mountains on t... (more)

The California Zephyr runs through the Keenesburg Cut, just as the sun crests the horizon.

CRI&P 218 and mates lead a freight through Colorado, near Castle Rock, sometime during the 1960s. Otto Perry photo, from my collection.

UP 1865 (SD40N) sits in the Union Pacific's North Yard in Denver, Colorado waiting for orders or servicing.

BNSF 8755 (SD70ACe) leads a colorful consist through Hudson, Colorado as it heads towards Denver on the Brush Sub.

A Norfolk Southern pony sits amongst the BNSF pumpkins waiting for service and the engine facility in Denver, Colorado.

BNSF 8555 (SD70ACe) leads a freight towards the Moffat Tunnel at Tolland, Colorado.

BNSF 7028 (ES44C4) crosses a county dirt road in Keenesburg, Colorado.

The California Zephyr leaves the depot at Glenwood Springs and heads west towards the next stop at Grand Junction, Colorado.

A very rare occurrence happened today as Governor Polis of Colorado organized a special run of an Amtrak train from Denver to Longmont to promote a new Amtrak route between Denver and Cheyenne, Wy... (more)

A pair of Amtrak trains sit on tracks 4 and 5 at Denver's Union Station. Amtrak engine #163 (P42DC) will leads the California Zephyr 6 out of Denver and Amtrack engine #174 will lead the Colorado... (more)