Southern Pacific Class AC-12

Southern Pacific Railroad's AC-12 series of cab forward steam locomotives was the last class of steam locomotives ordered by Southern Pacific.
They were built by Baldwin Locomotive Works during World War II, with the first, number 4275, entering service on October 27, 1943, and the last, 4294, on March 19, 1944. The locomotives were effectively a conventional 2-8-8-4 locomotive running in reverse; the tender being coupled at the smokebox end of the locomotive. This was made possible by the use of oil-firing. The distinct features of these locomotives include: a streamlined front with white band, an air horn on the front, a streamlined pilot, a SP 12-wheel box tender, and air compressors mounted on the smokebox. Southern Pacific used these locomotives all over its system, but they were extremely famous for working on Donner Pass & Cascade Summit.
SP used the AC-12s for a little over a decade with the first retirements occurring on April 5, 1955, and the last on September 24, 1958. Only one AC-12, SP 4294, has survived into preservation and is now on display at the California State Railroad Museum.
==Stock list==
Image	Loco No.	Build date(s)	Builder 	Status 	Notes
 	4275 	1943 	Baldwin Locomotive Works	Scrapped 	
 	4276 	1943 	Baldwin Locomotive Works	Scrapped 	
 	4294 	March 1944 	Baldwin Locomotive Works	On static display at the California State Railroad Museum.	The last "Cab-forward" steam locomotive of the Southern Pacific.
Category:4-8-8-2 locomotives
Category:United States
Category:Freight locomotives
Category:Southern Pacific locomotives
Category:Cab forward steam locomotives
Category:Simple articulated locomotives
Category:Cab forward locomotives
Category:Sole survivor
Category:Steam locomotives
Category:Locomotives
Category:Tender locomotives
Category:4-8-8-2 steam locomotives
Category:Articulated locomotives
Category:American steam locomotives
Category:American locomotives
Category:Baldwin locomotives
Category:Standard gauge locomotives
Category:Standard gauge locomotives of the United States
Category:Built in 1944
Category:Built in 1943
Category:Eight-coupled locomotives
Category:Passenger locomotives