Chicago & North Western EMD GP15-1 No. 4417 switches a train at Butler yard in Butler, Wisconsin, after the passing of a quick moving storm toward the end of a day in June 1984.

The sorting of engines in the UP's North Yard in Denver is fun to watch. The remote engineers pull a long line of freight cars from a receiving track and then give brief spurts of power as they s... (more)

The remote operator of UPY 618 (former Missouri Pacific GP15-1) brings the short freight into the North Yard for sorting.

The icicles on UPY 618 tell the story. A deep freeze along the Front Range makes for a miserable day operating the remotes in the UP's North Yard.

The North Yard in Denver offers a unique advantage point to photograph and video yard operations of the Union Pacific. The adjacent elevated viaduct has no fences to obstruct the view and the yar... (more)

A trio of UPY GP15s switch at Del Monte in Rochelle with LPG04.

UPY 681 (GP15-1) works the 36th Street Yard in Denver while UP 695 works the adjacent intermodal facility

UPY 681 was built for the Missouri Pacific in 1982. You can find a number of the former MoPac GP15-1's in the various yards around the Denver area.

CSX H751, the company's news 500-mile road local, rolls through Big Rock near Scott Depot, W.Va., with EMD GP15-1 No. 1552 in the lead. The new H-series local performs all local work previously ha... (more)

Duo of EMD GP15-1, UPY's 546 and 681, leading a local train of Union Pacific by UP Limon Sub in Aurora, Colorado.

The crew takes a break while ground forces clear the small yard and switches of recent snowfall. In the background is the former Chetek Feed & Farm Supply building, once served the railroad. T... (more)

In blizzard conditions UPY 618 (ex Missouri Pacific GP15-1) crosses Brighton Boulevard and delivers a set of oil cans to a refinery in Commerce City, Colorado.

A number of different units lead Troy Grove Job LPJ04 west through Cortland Illinois

There is a good variety of UP power sitting in the south end of the 36th Street Yard. To the right is the Rino station of RTD's A-Line which connects Denver's Union Station with Denver Internatio... (more)

UPY 618 brings a freight out of the North Yard, which just received a fresh layer of snow the night before.