ALL SIX OF OUR 2021 COLOR CALENDARS ARE IN STOCK AND SHIPPING: SANTA FE, BNSF, RIO GRANDE, UNION PACIFIC, CSX and NORFOLK SOUTHERN COLOR CALENDARS ARE IN STOCK AND SHIPPING AS OF AUGUST 7, 2020. Please read the following notes concerning 2021 calendar purchases.

NOTE: We have changed a few procedures regarding the ordering of our 2021 calendars. If ordering more than one calendar, enter the word "Standard" into the discount box when you get to the check-out page on your screen. Doing this will ensure you will receive your multiple-copy discount.

 

UNION PACIFIC'S BIG EMDs/Withers

Default Title: $35.95 USD

Union Pacific’s Big EMDs – DD35 and DDA40X 

After testing EMD’s GP35-DD35-DD35-GP35 demonstrator set, Union Pacific was so pleased with the design that it almost immediately ordered an additional 25 DD35s and 22 matching GP35s, which were delivered between May and August 1964. These joined the four-unit demon­strator set previously acquired by the carrier.

 

 As with UP’s earlier experiences with cabless booster units, the lack of flexibility of these massive, mainline-only units soon be­came apparent, and a planned follow-on order for 15 units was changed from booster units to 15 units with fully equipped cabs – the DDA35 was born.

The Centennials were the final example of Union Pacific’s search for the ideal loco­motive. While the road pursued a study of its motive power needs in late 1967 and early 1968, UP in March 1968 tried, as a stopgap measure, using EMD’s SD45 model as a high-horsepower, high-speed locomotive, but with limited success. UP returned to the concept of double-engine locomotives and in collaboration between the railroad and EMD, the DDA40X came to life. Within 13 months of an initial March 1968 communication, the railroad and the builder had worked out a definitive design, and the first unit was delivered. The timing of the first unit coincided with the 100th anni­versary of the May 10, 1869, ceremony marking the driving of the Golden Spike at Promontory Summit, Utah – the DDA40X quickly became known as the Centennial. It was numbered 6900, and 46 more examples arrived over the next 28 months.

List price $39.95, softcover, 128 pages, 130 b&w and 170 color photos, diagrams. SKU: UPEMD. Posted 6-8-12. Revised 7-7-12.