AMTK
| Amtrak | 46 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
CBQ
| Chicago Burlington & Quincy | 1 |
CRIP
| Chicago Rock Island & Pacific | 1 |
GBW
| Green Bay & Western | 2 |
MILW
| Milwaukee Road | 3 |
NKP
| Nickel Plate | 4 |
PPCX
| AAPRCO Register Private Cars | 10 |
RBBX
| Ringling Bros. and Barnum and Bailey | 11 |
UP
| Union Pacific Railroad Company | 3 |
UPP
| Union Pacific Passenger | 18 |