Western New York and Pennsylvania Railroad
WNYP RR OL-3 headed northbound out Port Allegany, PA with lone #637.
WNYP RR 637
American Locomotive Company
Montreal Locomotive Works
ALCO MLW M636 - Built July 1970.
- EXXXX - CN 2312 (Canadian National Railways)
- EXXX - QCM/Cartier 47 (Quebec Cartier Mining)
- EXX - SIXX 47 (636 Leasing) (via Marine Diesel Ltd)
- EX - NYSW 3668 (New York Susquehanna & Western)