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Union Pacific Big Boy
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The Union Pacific Big Boy is a type of simple articulated 4-8-8-4 steam locomotive manufactured by the American Locomotive Company in Schenectady, New York, between 1941 and 1944 and operated by the U
Publicity photo of Union Pacific Big Boy No. 4000, the first of the class, taken in 1941
Publicity photo of Union Pacific Big Boy No. 4000, the first of the class, taken in 1941
The cab controls of No. 4005 at the Forney Transportation Museum in Denver, Colorado.
The cab controls of No. 4005 at the Forney Transportation Museum in Denver, Colorado.
A close-up of a Hancock long-bell 3-chime "steamboat" whistle used on No. 4017.
A close-up of a Hancock long-bell 3-chime "steamboat" whistle used on No. 4017.
No. 4014 travels the Sacramento Subdivision towards Roseville, California, in July 2024.
No. 4014 travels the Sacramento Subdivision towards Roseville, California, in July 2024.
4-8-8-4
Videos
A 4-8-8-4, in the Whyte notation for the classification of steam locomotives by wheel arrangement, is a locomotive with a four-wheel leading truck, two sets of eight driving wheels, and a four-wheel t
Union Pacific Big Boy
…The Union Pacific Big Boy is a type of simple articulated 4-8-8-4 steam locomotive manufactured by the American Locomotive Company (ALCO) in Schenectady, New York, between 1941 and 1944 and operated by the Union Pacific…
A Big Boy locomotive. This example is Union Pacific 4014.
A Big Boy locomotive. This example is Union Pacific 4014.