ATSF
| Atchison Topeka & Santa Fe | 8 |
BN
| Burlington Northern | 6 |
BNSF
| BNSF Railway | 3 |
CEFX
| CIT Group/Capital Finance, Inc | 2 |
CHTT
| Chicago Heights Terminal Transfer | 4 |
CMHX
| CarMath Incorporated | 4 |
CN
| Canadian National Railways | 1 |
CNW
| Chicago & Northwestern | 7 |
CR
| Conrail | 3 |
CS
| Colorado & Southern | 1 |
CSX
| CSX Railroad | 5 |
CTRN
| Union Pacific Railroad Company | 2 |
CW
| Colorado and Wyoming | 1 |
CWP
| Chicago West Pullman & Southern | 2 |
DLRX
| General Electric Rail Services | 1 |
DRGW
| Denver & Rio Grande Western | 5 |
EJE
| Elgin Joliet and Eastern | 2 |
GN
| Great Northern | 2 |
GROX
| First Union Rail | 8 |
GWWR
| Gateway Western | 17 |
IAIS
| Iowa Interstate | 2 |
IHB
| Indiana Harbor Belt | 2 |
IMRL
| I&M Rail Link | 1 |
ITC
| Illinois Terminal Railroad | 1 |
KCS
| Kansas City Southern | 14 |
KCSM
| Kansas City Southern De Mexico | 1 |
LMIC
| Lake Michigan & Indiana Railroad | 1 |
MKT
| Missouri-Kansas-Texas | 7 |
MMA
| Montreal, Maine & Atlantic | 1 |
MP
| Missouri Pacific | 49 |
NDYX
| First Union Rail | 16 |
NOKL
| Northwestern Oklahoma | 2 |
NS
| Norfolk Southern | 3 |
NYC
| New York Central | 2 |
SLGG
| Progress Rail Services Corporation | 1 |
SOU
| Southern | 4 |
SP
| Southern Pacific | 8 |
TFM
| Kansas City Southern De Mexico | 1 |
TN
| Texas and Northern Railway Company | 2 |
TR
| Tomahawk Railway L.P. | 2 |
TZPR
| Tazewell & Peoria Railroad | 2 |
UP
| Union Pacific Railroad Company | 7 |