AOK
| Arkansas-Oklahoma Railroad | 2 |
ATSF
| Atchison Topeka & Santa Fe | 3 |
BLE
| Bessemer & Lake Erie | 1 |
BN
| Burlington Northern | 4 |
BNSF
| BNSF Railway | 8 |
BO
| Baltimore & Ohio | 2 |
CC
| Chicago Central & Pacific | 1 |
CNJ
| Central Rail Road of New Jersey | 1 |
CNW
| Chicago & Northwestern | 2 |
CP
| Canadian Pacific Railway | 4 |
CR
| Conrail | 12 |
CSX
| CSX Railroad | 3 |
DH
| Delaware & Hudson | 4 |
EAMX
| Everest Railcar Services, Inc | 1 |
EFVM
| Estrada de Ferro Vitoria-Minas | 1 |
EJE
| Elgin Joliet and Eastern | 1 |
EL
| Erie Lackawanna | 1 |
FXE
| Ferromex | 2 |
GN
| Great Northern | 13 |
GNTX
| TTX Company | 3 |
GONX
| Railgon Company | 3 |
GRR
| Georgetown Railroad Company | 1 |
GTW
| Grand Trunk Western | 2 |
HZGX
| Herzog Contracting Corporation | 9 |
IC
| Illinois Central | 1 |
ICG
| Illinois Central Gulf | 3 |
LN
| Louisville & Nashville | 3 |
MP
| Missouri Pacific | 4 |
MWAX
| Martin Marietta Materials Incorporated | 6 |
NP
| Northern Pacific | 4 |
NS
| Norfolk Southern | 2 |
NW
| Norfolk & Western | 1 |
PW
| Providence and Worcester | 2 |
RBMN
| Reading Blue Mountain & Northern | 1 |
SP
| Southern Pacific | 4 |
TCMX
| CIT Group/Capital Finance, Inc | 1 |
THB
| Toronto Hamilton & Buffalo | 3 |
TILX
| Trinity Industries Leasing Company | 1 |
UP
| Union Pacific Railroad Company | 2 |
USSX
| US Steel | 1 |
WC
| Wisconsin Central | 1 |
YC
| YC | 1 |