Posted by Russell Wiggins on June 26, 2013 
It is, or was, a GP7u. It's an ex-US Army unit.
Posted by Sid Vaught on June 26, 2013 
Rest in peace. I have fond memories of riding the Whittier mixed behind these. They were the only first generation geeks I can think of that had Alco trucks.
Posted by Mike Mautner on June 27, 2013 
Sad to see ! We operate and use sister unit #1800 .
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