AOK
| Arkansas-Oklahoma Railroad | 9 |
ATW
| Atlantic and Western | 1 |
BN
| Burlington Northern | 13 |
BNSF
| BNSF Railway | 7 |
CBQ
| Chicago Burlington & Quincy | 7 |
CC
| Chicago Central & Pacific | 2 |
CGW
| Chicago Great Western | 2 |
CIC
| Cedar Rapids & Iowa City | 4 |
CLC
| Columbia and Cowlitz Railway Company | 2 |
CN
| Canadian National Railways | 2 |
CNA
| Canadian National Railways | 2 |
CNW
| Chicago & Northwestern | 6 |
CP
| Canadian Pacific Railway | 1 |
CRLE
| Coe Rail Incorporated | 1 |
CVC
| Canadian National Railways | 1 |
DME
| Dakota, Minnesota and Eastern | 3 |
DWC
| Canadian National Railways | 1 |
ELS
| Escanaba and Lake Superior Railroad Comp | 1 |
FBOX
| TTX Company | 1 |
GN
| Great Northern | 4 |
GNWR
| Genesee and Wyoming Railroad Company | 1 |
IAIS
| Iowa Interstate | 1 |
IATR
| Iowa Traction Railroad Company | 2 |
IC
| Illinois Central | 2 |
ICE
| Iowa Chicago and Eastern | 1 |
IMRL
| I&M Rail Link | 1 |
LRS
| Laurinburg and Southern | 1 |
MILW
| Milwaukee Road | 1 |
MP
| Missouri Pacific | 1 |
MRL
| Montana Rail Link | 1 |
MRS
| Manufacturers Railway | 1 |
NOKL
| Northwestern Oklahoma | 4 |
NP
| Northern Pacific | 5 |
NRLX
| CIT Group/Capital Finance, Inc | 1 |
NS
| Norfolk Southern | 2 |
RBOX
| Railbox Company | 2 |
SLGG
| Progress Rail Services Corporation | 1 |
SLSF
| Saint Louis-San Francisco | 2 |
SOO
| Soo Line | 3 |
SOU
| Southern | 1 |
SPS
| Spokane Portland & Seattle | 2 |
SRY
| Southern Railway of British Columbia Lim | 2 |
TOE
| Texas Oklahoma and Eastern RR Company | 1 |
UP
| Union Pacific Railroad Company | 8 |
UPP
| Union Pacific Passenger | 12 |
WC
| Wisconsin Central | 4 |
WCCL
| Wisconsin Central | 3 |
WCLX
| Wilson Car Lines | 3 |
WTRM
| Warren and Trumbull Railroad Company | 1 |