CNW
| Chicago & Northwestern | 1 |
GNTX
| TTX Company | 1 |
GWWR
| Gateway Western | 1 |
HZGX
| Herzog Contracting Corporation | 1 |
KCS
| Kansas City Southern | 1 |
MKT
| Missouri-Kansas-Texas | 1 |
MP
| Missouri Pacific | 2 |
SP
| Southern Pacific | 1 |
TFM
| Kansas City Southern De Mexico | 1 |
UP
| Union Pacific Railroad Company | 1 |