File:DRM; Distant Shot of Metro-North ALCO RS-3M 605.jpg - Wikimedia Commons

ALCo / M-K RS-3m — Bridge Line Historical Society

ALCO RS3m Rebuilds Conrail Photo Archive

File:ALCO RS-8 6005.jpg - Wikimedia Commons

ALCo / M-K RS-3m — Bridge Line Historical Society

A D.C. Metro Track Inspector Was Fired for Filing False Reports. The Union Just Got His Job Back.

ALCO RS3m Rebuilds Conrail Photo Archive

ALCO RS3m Rebuilds Conrail Photo Archive

ALCO RS-3/Gallery, Locomotive Wiki

RS-3M Locomotive Photos

File:DRM; Distant Shot of Metro-North ALCO RS-3M 605.jpg - Wikimedia Commons