WSOR 751
| Model | Build Date | Builder's Number | Prime Mover | Horsepower |
| GP7/9 | 3/57 | 22881 | 16-567C | 1500 |
Unit History:
Minneapolis & St Louis 603 (Built as a GP9 from trade-in of Minneapolis & St Louis F2A 504)
Chicago & North Western 603
Chicago & North Western 4304 (Rebuilt to GP9R)
Fox River Valley Railroad 4304
Wisconsin Central 4304.
WSOR 4304
WSOR 751 (Designated as a GP7)
751 and WSOR 4533 (GP9M) switch the UW-Madison Heating plant in the Fall of 1999.
751 and 4513 sit in the East Johnson Yard in Madison (Fall 1999)
751 and 752 switch Madison Gas & Electric (5/16/00)
751 and 753 switch the East Johnson Street Yard (6/21/00)
