US #686 at the Virginia Museum of Transportation, Roanoke, VA. This odd-looking locomotive spent its life at the Panama Canal, towing ships at the west end of the canal on 5-foot gauge track. Built by GE in 1914, it could operate at up to 5 MPH without load; when towing ships, a lower gear could be selected to allow 2 MPH running. This locomotive was retired in 1964. Photo by Darrell Lamb, 4/14/1990.