The Kansas and Oklahoma Railroad (KO), owned by Watco Companies since mid 2001, operates over 800 miles of mostly former Rock Island track in western Kansas.  Most of their business is agriculturally oriented.

KO 1154 at McPherson, KS, 4/05/05.

KO 3621 near Chickasha, OK, 4/22/08.

KO 7020 at McPherson, KS, 4/05/05.