Photo by James Lalande, ONR North Bay shops, March 2001.
From right to left, a chronological sampling of ONR's locomotives - from first generation to third generation GM power:
GP9 1604 (GMD, 1957). 1750 horsepower 16-567C engine. Nice weathering!
SD40-2 1730 (GMD, 1973) and 1737 (GMD, 1974). 3000 horsepower 16-645E3 engine.
SD75I 2104 (GMD, 1999). 4300 horsepower 16-710G3C engine.