During World War II Union Pacific operated some of the most modern and powerful steam locomotives ever built. Among them were the famous "Big Boys," the largest steam …

Wikimedia Commons has media related to Union Pacific Railroad steam locomotives and Union Pacific Railroad diesel locomotives.

The fleet currently consists of two historic steam locomotives, three historic diesel locomotives, seventeen modern diesel locomotives in historic or commemorative paint schemes and nearly …

Nov 21, 2024 · Union Pacific Common Standard Steam Locomotives -- A listing taken from two UP drawings of 1940 and 1942, showing all classes of steam locomotives on Union Pacific …

The Union Pacific FEF series consists of 45 4-8-4 "Northern" steam locomotives built by the American Locomotive Company (ALCO) between 1937 and 1944 and operated by the Union …

In 2024, Big Boy No. 4014 visited 14 of the 23 states served by Union Pacific, with full day stops in Roseville, Ogden, Rochelle, Houston and Fort Worth. Future schedules are still in the …

This book features B&W photos of Union Pacific steam locomotives during the final years of steam on the UP system in Kansas, Nebraska & Wyoming. You see steam motive power from …

It is one of 105 Challengers built for Union Pacific between 1936 and 1943 and was, for many years, the only operating engine of its class in the world – the largest and most powerful …

Jul 13, 2023 · UP 844 has been in continuous service on Union Pacific since it was built in 1944; renumbered from UP 844 to UP 8444 in June 1962 to avoid confusion with newly delivered …

Jan 16, 2023 · Locomotives on Union Pacific and its predecessor companies and branch roads, were regularly renumbered due to a change in assignment, or to make way for a new series of …