Alco S3 Switcher #1186 “Edward A. Clark”

Alco S3 Switcher #1186 “Edward A. Clark”
electric trains
Image by cliff1066™
Inside the Alco S3 Switcher #1186 “Edward A. Clark”. The ALCO S-1 and S-3 were 660 horsepower (490 kW) switcher diesel-electric locomotives produced by ALCO and their Canadian subsidiary Montreal Locomotive Works (MLW). Basically, the two locomotives differed only in trucks, with the S-1 using ALCO’s own Blunt trucks, and the S-3 riding on standard AAR type A switcher trucks. (Wikipedia)