CB&Q 504 waits in Johnson Siding with the coach train as C&NW Alco RSD5 #1689 comes up alongside with the caboose train during the Illinois Railway Museum's annual Diesel Days event.

CBQ 504 and TTI 260 rest on the steam leads at the Illinois Railway Museum for showcase weekend night operations.

CBQ 504 and ATSF 92 sit side by side at IRM.

CB&Q 504 leads the Nebraska Zephyr east past Johnson siding.

CBQ 504 rests outside Barn 2.

CB&Q SD24 504 pulls onto station track 2 at IRM with the Nebraska Zephyr.

CBQ 504 and 9255 stand side by side at IRM for a special display for the Friends of the Burlington Northern Railroad.

CB&Q SD24 504 sits at IRM as the moon rises.

CB&Q SD24 504 sits on display at IRM.

CB&Q 504 and the caboose train wait out the night at the East Union depot during IRM's "Diesel Days" event.

CB&Q SD24 504 rests on station track 1 at the IRM waiting to depart with a caboose train.

CB&Q SD24 504 leads the coach train into station track 2 at the IRM.

CB&Q SD24 504 and WC SD45 7525 rest before the start of the 2016 version of Diesel Days.

Beautifully restored Burlington EMD units live inside IRM's diesel shop.

CB&Q SD24 504 leads the heavyweight coach train past the restored Spaulding Tower at IRM.