ABOX
| TTX Company | 2 |
ANR
| Angelina and Neches River Railroad | 2 |
AOK
| Arkansas-Oklahoma Railroad | 2 |
ATSF
| Atchison Topeka & Santa Fe | 7 |
ATW
| Atlantic and Western | 1 |
BAEX
| Andersons | 1 |
BCOL
| Canadian National Railways | 1 |
BKTY
| Union Pacific Railroad Company | 1 |
BNSF
| BNSF Railway | 14 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
CIBX
| CIT Group/Capital Finance, Inc | 1 |
CMHX
| CarMath Incorporated | 1 |
CN
| Canadian National Railways | 3 |
CNA
| Canadian National Railways | 7 |
CNIS
| Canadian National Railways | 2 |
CNW
| Chicago & Northwestern | 1 |
COER
| Crab Orchard & Egyptian | 8 |
CONW
| Colorado & North Western | 1 |
CP
| Canadian Pacific Railway | 7 |
CPAA
| Canadian Pacific Railway | 2 |
CR
| Conrail | 1 |
CS
| Colorado & Southern | 2 |
CSX
| CSX Railroad | 11 |
DMM
| Dansville and Mount Morris Railroad Comp | 1 |
DRGW
| Denver & Rio Grande Western | 8 |
DWC
| Canadian National Railways | 2 |
EEC
| East Erie Commercial Railroad | 4 |
FBOX
| TTX Company | 3 |
FCC
| Flagg Coal Co. | 1 |
FSRR
| FerroSur | 7 |
FXE
| Ferromex | 3 |
GNWR
| Genesee and Wyoming Railroad Company | 2 |
GTW
| Grand Trunk Western | 2 |
HS
| H and S Railroad Company | 8 |
IANR
| Iowa Northern Ry | 2 |
IBT
| International Bridge and Terminal Company | 3 |
IC
| Illinois Central | 1 |
KCS
| Kansas City Southern | 6 |
MISX
| Milwaukee Solvents and Chemicals Corporation | 1 |
MP
| Missouri Pacific | 2 |
MRL
| Montana Rail Link | 22 |
MSDR
| Knoxville & Holston River Railroad | 1 |
NADX
| General Electric Rail Services | 2 |
NOKL
| Northwestern Oklahoma | 3 |
NS
| Norfolk Southern | 5 |
NW
| Norfolk & Western | 3 |
NYC
| New York Central | 12 |
RBBQ
| Chicago, Burlington and Quincy Reefers | 1 |
RBOX
| Railbox Company | 17 |
RGS
| Rio Grande Southern | 1 |
SLSF
| Saint Louis-San Francisco | 1 |
SOU
| Southern | 10 |
SP
| Southern Pacific | 6 |
SRN
| Sabine River & Northern | 7 |
SRY
| Southern Railway of British Columbia Lim | 1 |
SSW
| St Louis Southwestern (Cotton Belt) | 1 |
TBOX
| TTX Company | 15 |
TSE
| Texas South-Eastern Railroad Company | 2 |
UP
| Union Pacific Railroad Company | 6 |
WCCL
| Wisconsin Central | 2 |
WP
| Western Pacific | 1 |
WRWK
| Providence & Worchester Railroad | 4 |
WSOR
| Wisconsin & Southern | 1 |