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12/18/2024
 
 
 
 
 
Owner: Union Pacific Railroad Company
Model:Alco 4-6-6-4Built As:UP 3939 (4-6-6-4)
Serial Number:72801Order No:S-1938
Frame Number:21X32 cylinders, 69" driversBuilt:8/1944
Notes:Schenectady 08/1944 (2nd #3939), retired 06/1959
Other locos with this serial:  
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