ATW
| Atlantic and Western | 5 |
BKTY
| Union Pacific Railroad Company | 1 |
CC
| Chicago Central & Pacific | 1 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CIGX
| THE CIT GROUP/CAPITAL FINANCE, INC. | 1 |
CSS
| Chicago South Shore And South Bend | 2 |
CSX
| CSX Railroad | 1 |
CWEX
| Midwest Generation LLC | 1 |
CWI
| Chicago and Western Indiana | 8 |
DRGW
| Denver & Rio Grande Western | 1 |
EJE
| Elgin Joliet and Eastern | 1 |
GGPX
| General American Marks Company | 1 |
GONX
| Railgon Company | 1 |
IRYM
| Illinois Railway Museum | 4 |
METX
| METRA | 1 |
MP
| Missouri Pacific | 7 |
MWCX
| Midwest Railcar Corporation | 1 |
NCTX
| CIT Group/Capital Finance, Inc | 1 |
NKCR
| Nebraska, Kansas & Colorado RailNet, Inc | 1 |
NS
| Norfolk Southern | 1 |
RPCX
| Railroad Passenger Car Numbering Bureau | 1 |
SP
| Southern Pacific | 4 |
TMER
| TMER | 1 |
UP
| Union Pacific Railroad Company | 5 |