WSOR 4491
| Model | Build Date | Builder's Number | Prime Mover | Horsepower |
| GP9M | 11/60 | 26348 | 16-567C | 1750 |
Unit History:
Chicago, Rock Island & Pacific 1329
Chicago, Rock Island & Pacific 4493
WSOR 4491
4491 switches the UW-Madison heating plant (1/28/00). Note the reversed sand filter access panels in the nose of the locomotive.
4491 and 6622 sit on the Pearl Street Yard turntable in Janesville (3/16/00)
4491 and 4533 switch the Madison Recycling Center on the Central Soya Spur (4/00)
2001 and 4491 switch the UW-Madison heating plant in January of 2001.
