On the afternoon of July 29, 1997, a southbound Wisconsin & Southern freight, led by former Southern Pacific EMD GP20 No. 4118, is about to thunder over the diamond at Duplainville, Wisconsin. In the background on the Soo Line’s former Milwaukee Road double-track main line is Wisconsin Central train 47, waiting at the connection track signal to head north on the WC main after the WSOR train clears the plant.