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WSOR 1801
| Model | Build Date | Builder's Number | Prime Mover | Horsepower |
| SD18 | 10/59 | 25599 | 16-567D2 | 1800 |
Unit History:
Southern 2503 (Built as an SD24)
Southern 6301
Precision National Corporation 1801 (Rebuilt by the Milwaukee Road for PNC as an SD10)
Chicago & North Western 6623 (Designated as an SD18R)
WSOR 6623
WSOR 1801



1801 runs light through the UW-Madison campus on its way to Middleton (3/9/00)

1801 leads the MALAM back from Middleton (3/9/00)

1801 throttles up as it crosses Pearl Street in Janesville (3/13/01).

1801 and 10A pull the JMA through Milton (3/13/01).