CB&Q 504 pushes its train past the semaphores at Olson Road.

IRM's beautifully restored CB&Q SD24 holds on station track 2 with the coach train.

CB&Q SD24 504 pinch hits for the day on the Nebraska Zephyr at the IRM.

CBQ SD24 504 splits the semaphores, east of the Illinois Railway Museum.

The fresh looking SD24 sits, staged, ready to pull the RPO / coach train later in the day.

CB&Q 504 and 9255 wait their next assignment at the Illinois Railway Museum.

The power for the "Diesel Days" freight train sits on the west wye.

CB&Q 504 spends the night on the main after being hand washed for Diesel Days.

Posing during a night of Diesel Days.

CBQ 504, SP 1518 and CNW 6847 make for quite a striking lineup as they sit, tied down after IRM's 2011 Diesel Days.

The Diesel Days night photo session at the Illinois Railway Museum.

The wayfreight passes the depot tracks at West Union enroute to make a setout on the CNW interchange.

The IRM's unexpected CBQ line up with the Nebraska Zephyr to the Left and the steamer to the right.

Engineer Roger B. waits for traffic ahead to clear so he can put 504 to bed for the night. As seen through the East Union station bay window during night running at Museum Showcase Weekend 2009.

While an IRM employee guards the crossing with a "Stop" sign, 504 crosses Olson Rd. as the last locomotive in the parade line up for the Illnois Railroad Museum's Diesel Days celebration.