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4/18/2024
 
 
 
 
 
Owner: Union Pacific Railroad Company
Model:Alco 4-6-6-4Built As:UP 3944 (4-6-6-4)
Serial Number:72806Order No:S-1938
Frame Number:21X32 cylinders, 69" driversBuilt:8/1944
Notes:Schenectady 08/1944 as #3944 (coal), #3707 (oil) in 10/1952, retied 06/1961
Other locos with this serial:  UP 3707(4-6-6-4)
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UP 4-6-6-4 #3707 - Union Pacific Challenger
Title:  UP 4-6-6-4 #3707 - Union Pacific Challenger
Description:  A dramatic plume of black smoke signals the startup of this Alco-Schenectady 4-6-6-4 Challenger. Built in August of 1944 as UP #3944, renumbered to 3707 in October 1952 when converted from coal to oil fuel, retired in June 1961, Arthur Stensvad photo.
Photo Date:  5/6/1954  Upload Date: 3/11/2020 6:23:56 AM
Location:  Ogallala, NE
Author:  Gary Everhart
Categories:  Roster,Steam
Locomotives:  UP 3707(4-6-6-4)
Views:  656   Comments: 0


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