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During a winter break during college in 1983 I took an excursion to Fond du Lac, WI while I was staying with my parents in Chicago.  Here I got a few shots of SOO in action.  I also got a few winter shots at the closed tower located at Leithton

SOO 4407 at Fond du Lac, WI.

SOO 724 leads a freight into Fond du Lac yard

SOO 747 at Fond du Lac

SOO 747 leads a frieght thru fresh snow

SOO 749 crosses the diamond at the abandoned tower at Leithton

Another shot of 749 as the snow gets heavier.