CRIP 4506 leads the caboose train onto the mainline at the Illinois Railway Museum during the annual Diesel Days event in 2018.

The Illinois Railway Museum's newly painted Rock Island GP7R #4506 leads the coach train out of the station on the museum grounds and onto IRM's mainline, seen here passing one of the museum's act... (more)

The Illinois Railway Museum's newly painted Rock Island GP7R #4506 leads the coach train back into the station on the museum grounds, passing Spaulding Tower in the process.

Diesel Days 2021 at the Illinois Railway Museum is well underway as the CRIP 4506 is on the approach to Seeman Road with the coach train. Originally built as the CRIP 1266 in 1952, she later becam... (more)

As the evening light begins to creep in, the IRMs Showcase Weekend is still in full swing. After a successful trip to Kishwaukee Grove, the shiny high hood geep pair, Rock Island #4506 and Illinoi... (more)

RI 4506 picks CBQ 9255 at Barn 2. These movements were done after the photo freight did its last run, and Illinois Railway Museum was "cleaning up" the displays of the night before, when... (more)

From left to right, CBQ 504, CRIP 4506, ATSF 92, and CBQ 9255 sit on display during IRM's showcase weekend. Special thanks to Rob S. for the lighting.

Rock Island 4506 leads the coach train east past the blades at Olson Rd in Union.

Rock Island 4506 leads a train past Johnson siding.

The caboose train is making its westbound run back to the museum with another outstanding lash-up put together by the Illinois Railway Museum. CRIP 4506 and ITC 1605 have the honors.

CRIP 4506 idles at the Illinois Railway Museum before being used for throttle time during Diesel Days to raise funds for operations at the venue.

The freshly restored Rock Geep is displayed just after sunset at the Illinois Railway Museum.

CRIP 4506 holds at East Union depot at the Illinois Railway Museum.

Four restored units are posed on the west end of the East Union Depot. From left to right, BN 5383 (U30C), C&NW 411 (F7A), CB&Q 504 (SD24) and CRI&P 4506 (GP7R).

The Rock Island 4506, recently refurbished by IRM, sits at the west end of the station tracks posed in front of the old EJ&E Spaulding tower after sunset.