AOK
| Arkansas-Oklahoma Railroad | 3 |
ATW
| Atlantic and Western | 2 |
BCOL
| Canadian National Railways | 6 |
BN
| Burlington Northern | 2 |
BNSF
| BNSF Railway | 3 |
CHTT
| Chicago Heights Terminal Transfer | 2 |
CLC
| Columbia and Cowlitz Railway Company | 3 |
CP
| Canadian Pacific Railway | 1 |
CRLE
| Coe Rail Incorporated | 1 |
GAEX
| General American Marks Company | 1 |
HLSC
| Hampton Railway Incorporated | 1 |
IC
| Illinois Central | 2 |
KCS
| Kansas City Southern | 1 |
MSRC
| Kansas City Southern | 4 |
NOKL
| Northwestern Oklahoma | 2 |
SERA
| Sierra Northern Railway | 1 |
SGLR
| Seminole Gulf | 1 |
SSAM
| Sault Ste. Marie Bridge Company (Canadia | 1 |
TOE
| Texas Oklahoma and Eastern RR Company | 2 |
TTZX
| TTX Company-Centerbeam Flats | 4 |
UCRY
| Utah Central | 1 |
WC
| Wisconsin Central | 1 |
WCRC
| Washington Central | 1 |