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1/26/2026
 
 
 
 
 
Owner: Pennsylvania Railroad
Model:BLW 2-10-0Built As:PRR 4637 (2-10-0)
Serial Number:57157Order No:
Frame Number:30½X32 cylinders, 62" driversBuilt:9/1923
Notes:PRR Class I-1SA.
Other locos with this serial:  PRR 4637(2-10-0)
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PRR 4637, I-1SA, 1952
Title:  PRR 4637, I-1SA, 1952
Description:  Here is a photo by an unidentified photographer that was taken in Northumberland, Pennsylvania, in July of 1952. Shown here is Pennsylvania Railroad engine #4637, an I-1SA (2-10-0) "Decapod" built by the Baldwin Locomotive Works as an I-1S during August of 1923, rebuilt in Juniata as an I-1SA in December of 1943, and retired in December of 1953 after 30 years of faithful service. Brad Mann Collection.
Photo Date:  7/7/1952  Upload Date: 10/30/2025 6:27:47 PM
Location:  Northumberland, PA
Author:  Thomas C. Ayers
Categories:  Yard,Steam
Locomotives:  PRR 4637(2-10-0)
Views:  177   Comments: 0


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