APA
| Apache Railway Company | 1 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
CHTT
| Chicago Heights Terminal Transfer | 1 |
EEC
| East Erie Commercial Railroad | 7 |
FCCM
| Compania de Ferrocarriles Chiapas Mayab | 2 |
GMRC
| Green Mountain RR | 2 |
GVSR
| Galveston Railroad L.P. | 1 |
HS
| H and S Railroad Company | 11 |
IC
| Illinois Central | 1 |
ICG
| Illinois Central Gulf | 1 |
NOKL
| Northwestern Oklahoma | 1 |
NS
| Norfolk Southern | 1 |
SP
| Southern Pacific | 6 |
SRN
| Sabine River & Northern | 4 |
SSW
| St Louis Southwestern (Cotton Belt) | 4 |
VCY
| Galveston Railroad, L.P. | 1 |
WCTR
| WCTU Company White City Terminal Railway | 1 |
WP
| Western Pacific | 1 |