MRS-1, 'post' WWII worldwide use locomotive. Built to United States Army Transportation Corps (USATC) specifications to operate on different gauges and of restricted height to fit into smaller tunnels. Both EMD and ALCo built these. A few remain today. This one is part of the Sierra Railway and is operational.

This is the EMD version : http://upload.wikimedia.org/wikiped.....1811EUSTIS.jpg