Two C&NW SD40-2s and an SD45 pull a westbound through Stanwood, Iowa.  Sound file and photo June of 1975.

Two C&NW SD40-2s pull a westbound hopper train through Nelson, Illinois.  Sound file and photo May 17, 1981.

Two C&NW trains meet at speed at Ogden, Iowa.  First, a pair of SD40-2s pass on an eastbound.  Just after the first train, a westbound rolls through.  As the caboose of the first train passes, the conductor yells a warning to everyone to look out for the second train.  Photo of first train shown.  Photo and sound file May 21, 1983.

Two C&NW SD40-2s depart Appleton, Wisconsin April 1986.   Photo date March 1974.  (Stereo Sound)

An SD40 and a Conrail SD40-2 pull a C&NW train through Bark Pit, Wisconsin.  Photo and sound file July 1983.

A SOO GP38-2 performs switching chores at Neenah, Wisconsin in December of 1985.  GP38-2s are powered with a non-turbocharged 16-cylinder 645 prime mover.  The non-turbo 645 produces a much different sound than the turbocharged version used in the SD40-2.  (Stereo sound) Photo at North Fond du Lac Wisconsin April 1983.