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UP GE U50 32 waits for its next run at the Roads Huge North Platte Yard on a nice spring day in April 1974

Union Pacific GE U-50's 46 and 50 along with two GP9's are being serviced at the Omaha shops. The end is near for the three ALCO switchers in the yard. Photo by Ken Crist, from my slide collecti... (more)

A big UP GE U50 # 32 rests at the roads huge North Platte Yard in the spring of 1974. this shot shows the squirrel cooling fan system pretty well this unit was built in october 1963 and traded ba... (more)

The first GE U50s delivered to the UP in October 1963 numbered 31-33. View of UP 31 at Chicago, Illinois on October 19, 1963. Photo taken from my collection, No photographer's name listed.

Union Pacific's General Electric U50s generated 5000-hp, were the frist big double engined units to arrive in October 1963. Units 48 and 41 powers a long westbound freight up Sherman Hill, Wyoming... (more)

A rare Bird UP U 50 # 43 Rests in CNWs Proviso Yard In early 1974. A number of these units were in the CNW at the time as they were considering buying them. But the CNW bought the N&W C628s inste... (more)

Not something you see everyday A rare SP GE U50 # 9950. The SP had only 3 of these Monsters. A lot of People thought they were ugly but I thought they were neat. This one along with Some U28C ... (more)

Two U50's spliced by a GP9B lead an early pig train.

Driving U.S. Route 30 across Nebraska in the 1960s is a continuous variety show. Here come GE U50 33 and EMD DD35B 72B, a 10,000-hp combination, booming along eastbound, east of North Platte on Oc... (more)

The worker sent out to attend to engine 44’s needs between runs must feel more like he’s boarding a ship than climbing onto a locomotive. Just how big is General Electric’s massive U50? At o... (more)

Three units – a pair of GE U50’s and an EMD DD35B – labor up Archer Hill, Union Pacific’s climb from Crow Creek east of Cheyenne, the day after Christmas, 1966. While not the ordeal nor th... (more)

By the early 1960s Union Pacific was looking around for a diesel model to replace its turbines, something that, run in three-unit sets, could produce 15,000 hp. GE’s answer was the twin-engine U... (more)

Just days out of General Electric’s Erie works on June 28, 1964, and showroom fresh, Southern Pacific U50 8500 simmers under the El Paso sun, about to lend its considerable 5,000 hp to a westbo... (more)

A rare visitor to Denver in 1968, one of UP’s great clattering U50’s dominates the ready tracks at the Pullman roundhouse. Likely the 36 came in early morning off the Julesburg line and will l... (more)

Two GE U50’s, 31 and 33, hustle a westbound UP freight through North Topeka, Ks. on August 22, 1965. Note the passenger car in the small car shop at right.