| LC control no. | sh 93000066 |
|---|---|
| Topical heading | Big Boys (Steam locomotives) |
| Variant(s) | 4000 Class (Steam locomotives) Big Boy (Locomotive) Union Pacific 4000 Class (Steam locomotives) Union Pacific Big Boys (Steam locomotives) |
| See also | Steam locomotives |
| Found in | Work cat.: 92244418: Kratville, W.W. Little look at Big Boy, c1992. Wikipedia, 23 Feb. 2010 (Big Boy was the name given to the Union Pacific Railroad's twenty-five 4000 class 4-8-8-4 articulated steam locomotives built between 1941 and 1944 by Alco; Big Boys) |
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