Perhaps you were looking for one of these?

• OLB Omaha Lincoln and Beatrice Railway Company
• TR Tomahawk Railway L.P.
• CMO Chicago St Paul Minneapolis & Omaha
• GC1 Graham County
• MTW Marinette Tomahawk & Western
• SOT SOUTH OMAHA TERMINAL RAILWAY COMPANY
• OMAX Omaha Public Power District
• OPPX Omaha Public Power District
• TYOX The Tie Yard Of Omaha Inc.