BLE
| Bessemer & Lake Erie | 1 |
BNSF
| BNSF Railway | 3 |
BO
| Baltimore & Ohio | 3 |
BS
| Birmingham Southern RR | 1 |
CEDX
| G.S.S.&M. Inc, Rail Division | 1 |
CN
| Canadian National Railways | 1 |
CP
| Canadian Pacific Railway | 2 |
CR
| Conrail | 54 |
CSX
| CSX Railroad | 5 |
EJE
| Elgin Joliet and Eastern | 2 |
FURX
| First Union Rail | 1 |
GNRR
| Georgia Northeastern | 3 |
GNTX
| TTX Company | 2 |
GONX
| Railgon Company | 1 |
GRW
| Gary Railway | 1 |
GWWR
| Gateway Western | 1 |
HPJX
| Helm-Pacific Leasing | 1 |
IC
| Illinois Central | 1 |
ICE
| Iowa Chicago and Eastern | 3 |
ICG
| Illinois Central Gulf | 1 |
IHB
| Indiana Harbor Belt | 2 |
ISGX
| International Steel Group | 1 |
ITC
| Illinois Terminal Railroad | 4 |
LVRR
| Lycoming Valley | 1 |
MP
| Missouri Pacific | 13 |
NOKL
| Northwestern Oklahoma | 1 |
NP
| Northern Pacific | 1 |
NS
| Norfolk Southern | 28 |
NW
| Norfolk & Western | 3 |
NYC
| New York Central | 2 |
PC
| Penn Central | 9 |
SCL
| Seaboard Coast Line | 1 |
SOU
| Southern | 3 |
SP
| Southern Pacific | 1 |
TFM
| Kansas City Southern De Mexico | 2 |
UP
| Union Pacific Railroad Company | 2 |
WC
| Wisconsin Central | 5 |
WE
| Wheeling & Lake Erie | 2 |
WEPX
| Wisconsin Electric Power Company | 3 |